Which SIM card is best and why? Yes there is a difference. - T-Mobile LG G2x

I've personally experienced the differences with SIM cards.
Having been with T-Mobile (since Voicestream) I've gone through tons of SIM cards throughout the years. For the heck of it every time I got a new phone I just swapped to the new SIM.*
Ok so let's talk present day. I've noticed that the SIM cards have been changing. The large gold surface area is now small etc...
* Recently (past few years) before all the smart phones started to pop up like crazy, I was using the same SIM card with several devices. I remember getting crappy data speeds at one point then I swapped out to a newer SIM and it was night and day.
Now it looks like the newest SIM's are marked with an, "activate by," date. I wonder if there are limits to how many times that SIM can connect to the network?
Anyhow, anyone with advanced knowledge about SIM's, your input would be greatly appreciated. I find it a pretty interesting topic due to my personal experience. There has to be something with the changes that do effect the data speeds for example.
Below are some pics...
"SO FOR THOSE WHO ARE HAVING CONNECTION ISSUES, COULD IT BE PERHAPS YOUR SIM?"

the reps at a store just told me to makr sure I used the new sim card they gave me because only their new ones allow for the 4g network
they have a diff design hatched in the gold
but u r correct in noticing the difference
sent from my G2X with no regrets

rich2thad said:
the reps at a store just told me to makr sure I used the new sim card they gave me because only their new ones allow for the 4g network
they have a diff design hatched in the gold
but u r correct in noticing the difference
sent from my G2X with no regrets
Click to expand...
Click to collapse
That's odd, I'm still using my sim from my old G1 and I hit 9018kbits when I did a speed test a couple of days ago.
Sent from my LG-P999 using XDA Premium App

rich2thad said:
the reps at a store just told me to makr sure I used the new sim card they gave me because only their new ones allow for the 4g network
they have a diff design hatched in the gold
but u r correct in noticing the difference
sent from my G2X with no regrets
Click to expand...
Click to collapse
Interesting as figured. Thanks for your input.

well in their defense , they said new sim card in respect to at some point in time they changed how thw sim cards were made and was concern if i had an old one seeing as I've been with then for years...
but
ugh I wish I got speeds like that northern cali speeds suck ...
in sacramento I get maybe 1mb if I'm lucky usually around 0.85mb/s
sent from my G2X with no regrets

I just switched sim cards one day ago. I switched to the one that came with the phone. I notice no difference at all. The old one had been in my vibrant for about 7 months. T mobile rep told me that the only difference in sims(size of gold area) is how many contacts they will hold. I do not believe that for a minute. I just sold my Nexus One and it would not recognize the sims with the smaller gold contact area. I have been told so much BS from CS and tech reps at tmobile that I rarely believe any thing they say at this point. I am getting a replacement phone which should arrive on Monday. I just hope that it is free of most of the issues that my present one has or what I have seen listed in these threads. I really really like this phone just hope either it is issue free or the issues are addressed by LG right away if not I will send back and cancel the order. This phone has potential to be THE Beast of the the Bunch!!!!

I just got a new sim card with smaller gold area for my N1 and it works fine.
Sent from my Nexus One using Tapatalk

davehasninjas said:
That's odd, I'm still using my sim from my old G1 and I hit 9018kbits when I did a speed test a couple of days ago.
Sent from my LG-P999 using XDA Premium App
Click to expand...
Click to collapse
I'm also using one that I got with my G1 and am pulling down almost 6mb myself. The TMo rep stated that my SIM will work just fine, and it does. But if I notice slow speeds, I should just activate the new one and put that in.
Side note, anybody know how to activate it to your account without having to go through the completely clueless IVR? Perhaps through their website?

Fernanernie said:
Side note, anybody know how to activate it to your account without having to go through the completely clueless IVR? Perhaps through their website?
Click to expand...
Click to collapse
Closest I know of is doing a chat session with a rep through their web site. I have only swapped SIMs once when I switched to the Nexus One and had the 3G connection issues (didn't have them with the G1). Went smooth and had no problems.

I work at a retail store and the newest SIMs have a matte white finish to them and have the numbers "5.0.0.1" on the bottom. I don't know if it gets you faster speeds , but generally these ones fix most customers connection problems.
Sent from my LG-P999 using XDA Premium App

I'm having super nasty reboot issues, but I also have the SIM from my T-Mobile Wing still so I'm going to go swap it tomorrow and see if it at least helps.

I just chatted with T-Mobile customer rep online and she swap for me in 5 mins. Painless process.

Been curious lately myself. To Tmobiles reps surprise when I told them. (After they said I wouldnt have 3g or 4g) I told them I am still using my simcard from 2003.. from my Nokia 3650! I use it in my G1, I have used it in my HD2 with Android and Better windows rom for HSPA (4g) just fine..
Reps didnt really believe I am using that old of a sim card. I am however. Data speed seems fine to me. Wouldnt mind being proven wrong if a new sim style has faster speed.
I will believe the new sim cards have larger space for contacts tho.
The main reason I think there are new sim cards and they are being pushed, is due to sim cloning. Older sim cards could be cloned so you could put multiple numbers on 1 sim, or just clone it to prevent swapping. Newer sim cards however, cant really be cloned. So if you want my thoughts, its not about the data, its about the security.

That's a good observations.
Sent from my LG-P999 using xda premium

rich2thad said:
well in their defense , they said new sim card in respect to at some point in time they changed how thw sim cards were made and was concern if i had an old one seeing as I've been with then for years...
but
ugh I wish I got speeds like that northern cali speeds suck ...
in sacramento I get maybe 1mb if I'm lucky usually around 0.85mb/s
sent from my G2X with no regrets
Click to expand...
Click to collapse
I am in Northern Ca too, and I am getting between 2.5-4M down, and 1.1-3 Up

As far as how GSM works i know the carriers network information is on the sim card not the phone. Hence why you can swap GSM carriers on your phone at any time. The sim card carries the prl which instructs the phone what towers to use. So getting a new sim card once or twice a year would seem like a good idea.
This is my guessamation lol
Sent from my LG-P999 using xda premium

Older SIM cards, unlike the newer ones, have an activation limit (usually ~90,000 or so). Once this limit is reached, the SIM card will not connect to the network anymore. The 'activation' event occurs each time your modem connects to a new cell radio on the towers. This wasn't a large issue with GSM/EDGE because they had a larger cell radius and your phone would use data less. With HSPA(+), your phone can make hundreds of connections in a day, sometimes thousands.

JaiaV said:
Older SIM cards, unlike the newer ones, have an activation limit (usually ~90,000 or so). Once this limit is reached, the SIM card will not connect to the network anymore. The 'activation' event occurs each time your modem connects to a new cell radio on the towers. This wasn't a large issue with GSM/EDGE because they had a larger cell radius and your phone would use data less. With HSPA(+), your phone can make hundreds of connections in a day, sometimes thousands.
Click to expand...
Click to collapse
Never seen or heard this one before. I mean using it since 2003 to now. I would be sure over my time and travel I wouldve connected that much and more.

First off - there is supposedly a problem for Wifi calling and the G2X and the TM9177 sim card,
many seem to find that switching to an older TM9073 (or TM9035) SIM card fixes the wifi calling problem.
see: http://support.t-mobile.com/thread/10103?tstart=0
see: http://support.t-mobile.com/message/68263
I had the older TM9073 which worked great for 2g/3g/HSPA+/wifi calling- but it died on me while traveling for work, and I was fortunately able to stop by a T-mobile store, and they gave me a new SIM --- the TM9177 --- which works fine for 2g/3g/HSPA+... but wifi calling is a mixed bag, it works on some ROMS, but not otthers.. whereas before the TM9073 works for all ROMs.

arvonn said:
First off - there is supposedly a problem for Wifi calling and the G2X and the TM9177 sim card,
many seem to find that switching to an older TM9073 (or TM9035) SIM card fixes the wifi calling problem.
see: http://support.t-mobile.com/thread/10103?tstart=0
see: http://support.t-mobile.com/message/68263
I had the older TM9073 which worked great for 2g/3g/HSPA+/wifi calling- but it died on me while traveling for work, and I was fortunately able to stop by a T-mobile store, and they gave me a new SIM --- the TM9177 --- which works fine for 2g/3g/HSPA+... but wifi calling is a mixed bag, it works on some ROMS, but not otthers.. whereas before the TM9073 works for all ROMs.
Click to expand...
Click to collapse
+ 1 my new SIM didn't like wifi calling at all... but switched to the TM9073 and never had a problem since on any rom.
Sent from my HellfireKindle using Tapatalk 2

Related

At&t Fuze Radio & Reset Strangeness..

Boy I'm gonna get hammered bad if my search failed to find an existing thread on this one (and yes I will moderate this thread if someone can point me to a relevant thread)...
Just exchanged my first Fuze at 27 days of use because I was experienceing the following issues:
1. Often times when changing bands (i.e. from G/E to 3G or back) it would completely drop the connection.
2. While on a call it wouldn't switch bands.
3. At least once every 36 - 48 hrs it would randomly soft reset.
4. It would lose the Data Connection and not be able to reconnect until I soft reset.
I tried several Radio Roms (Raphael 1.01.25.16, 1.02.25.28, 1..02.25.32 & Experia 1.06.25.29 & Blackstone 1.09.25.14) with the same results.
I used my own Cooked Rom, At&t Stock 1.95.502.5, & Da_G 1.9 w/MSVC again with the same results.
I've also run with & without HardSPL and both Security Locked & Security Unlocked all seems to have no effect on this issue.
So as I said I just exchanged it today. Now on the way back to my office the replacement did a random soft reset!
Has anyone else seen or experienced this issue?
I'm going to go out on a limb here. Have you replaced your SIM card since this issue has started.
Actually I didn't think to do that as my SIM was replaced just a few months ago when I acquired my last (4th) Tilt.
I'll stop at At&t Corp Store on the way home and get a new SIM....
kyphur said:
Actually I didn't think to do that as my SIM was replaced just a few months ago when I acquired my last (4th) Tilt.
I'll stop at At&t Corp Store on the way home and get a new SIM....
Click to expand...
Click to collapse
Actually there is a new sim card, with better band selection. The new sim card was released for the multiband switching issue known with PDA's. Your issue sounds like many I have seen in the field. Especially with the Fuze. This stand most true for people in the 3g/edge border that consistently switching back and forth.
Here is a pic of the sim, make sure they give you this one. not the old blue and white one.
Well, the local store didn't have the orange SIMs but they did have one newer than the one I was already using.
Don't know what the numbers mean but I noticed your pic has 71247D, 2024 just to the side of the SIM and mine has 71234G, 3022 there.
I'll just give it a few days and see if things are better. If now then I'll call customer service and insist they ship me an orange SIM.
kyphur said:
Well, the local store didn't have the orange SIMs but they did have one newer than the one I was already using.
Don't know what the numbers mean but I noticed your pic has 71247D, 2024 just to the side of the SIM and mine has 71234G, 3022 there.
I'll just give it a few days and see if things are better. If now then I'll call customer service and insist they ship me an orange SIM.
Click to expand...
Click to collapse
The 71234G 3022 one is the same one they shipped me when I got my Fuze (like 2 days after it came out).
I haven't even activated that one, instead I just stuck in my old Cingular branded SIM and it seems to be working alright.
I'll get dropped calls and stuff, but I don't think its related to the SIM.
I contacted AT&T when I got my Fuze and they said there's no real reason for me to swap SIMs and I could just keep that one as a backup, so that's what I've done.
kyphur said:
Well, the local store didn't have the orange SIMs but they did have one newer than the one I was already using.
Don't know what the numbers mean but I noticed your pic has 71247D, 2024 just to the side of the SIM and mine has 71234G, 3022 there.
I'll just give it a few days and see if things are better. If now then I'll call customer service and insist they ship me an orange SIM.
Click to expand...
Click to collapse
You should be ok with the one you have, now if you need the newer orange one and they want to charge you p.m. me and ill ship you one no charge. just let me know if the sim fixed the issue. Effectively you still the old sim.
71234 is the SKU for the old sim card.
71247 is the SKU for the new one.
mindfrost82 said:
The 71234G 3022 one is the same one they shipped me when I got my Fuze (like 2 days after it came out).
I haven't even activated that one, instead I just stuck in my old Cingular branded SIM and it seems to be working alright.
I'll get dropped calls and stuff, but I don't think its related to the SIM.
I contacted AT&T when I got my Fuze and they said there's no real reason for me to swap SIMs and I could just keep that one as a backup, so that's what I've done.
Click to expand...
Click to collapse
Does the cingular sim say 3G on it. If not use the AT&T sim.
There have been NUMEROUS network upgrades since the days of the cingular sim, and those sim's are not provisioned for the updates. So if you are getting numerous amounts of dropped calls then you need a new sim card
KD8DNS said:
Does the cingular sim say 3G on it. If not use the AT&T sim.
There have been NUMEROUS network upgrades since the days of the cingular sim, and those sim's are not provisioned for the updates. So if you are getting numerous amounts of dropped calls then you need a new sim card
Click to expand...
Click to collapse
This is great info, thanks! I've had some more dropped calls than usual lately and was thinking about flashing a new radio. I think I'll try the new SIM first!
kyphur said:
Boy I'm gonna get hammered bad if my search failed to find an existing thread on this one (and yes I will moderate this thread if someone can point me to a relevant thread)...
Just exchanged my first Fuze at 27 days of use because I was experienceing the following issues:
1. Often times when changing bands (i.e. from G/E to 3G or back) it would completely drop the connection.
2. While on a call it wouldn't switch bands.
3. At least once every 36 - 48 hrs it would randomly soft reset.
4. It would lose the Data Connection and not be able to reconnect until I soft reset.
I tried several Radio Roms (Raphael 1.01.25.16, 1.02.25.28, 1..02.25.32 & Experia 1.06.25.29 & Blackstone 1.09.25.14) with the same results.
I used my own Cooked Rom, At&t Stock 1.95.502.5, & Da_G 1.9 w/MSVC again with the same results.
I've also run with & without HardSPL and both Security Locked & Security Unlocked all seems to have no effect on this issue.
So as I said I just exchanged it today. Now on the way back to my office the replacement did a random soft reset!
Has anyone else seen or experienced this issue?
Click to expand...
Click to collapse
LMAO......
Even moderators don't use the "Search" anymore. What's next?
All joking aside, mine has been doing the same lately. I figured it was my crappy "cooking". Actually, it could be both. Was thinking of returning mine as well because of the random resets. Things that make you go hmmmmmm!
KD8DNS said:
Actually there is a new sim card, with better band selection. The new sim card was released for the multiband switching issue known with PDA's. Your issue sounds like many I have seen in the field. Especially with the Fuze. This stand most true for people in the 3g/edge border that consistently switching back and forth.
Here is a pic of the sim, make sure they give you this one. not the old blue and white one.
Click to expand...
Click to collapse
Where is my new sim card? I see how it is. Holding out on everyone huh?
P1Tater said:
Where is my new sim card? I see how it is. Holding out on everyone huh?
Click to expand...
Click to collapse
You stood me up the other night at the hotel, man I had the donkey's a webcam and a 55 gallon ok KY jelly, so go buy your own damn sim card.
Seriously, if you cant get a free one, hit me up and ill take care of ya sweety.
KD8DNS said:
Does the cingular sim say 3G on it. If not use the AT&T sim.
There have been NUMEROUS network upgrades since the days of the cingular sim, and those sim's are not provisioned for the updates. So if you are getting numerous amounts of dropped calls then you need a new sim card
Click to expand...
Click to collapse
I've been getting lots of dropped calls lately, no matter which radio I try!!!
I PMed you.
The Cingular SIM I have does say 3G in small print on the back, and the numbers on it are 64205G 3020
Same with me. Everynow and then the only way to get online is by a soft-reset. I notice it after I've left my phone idle for a while. I got my Fuze in November it came with a blue and white SIM with an orange 3g logo and ATT written in white.
alabij said:
Same with me. Everynow and then the only way to get online is by a soft-reset. I notice it after I've left my phone idle for a while. I got my Fuze in November it came with a blue and white SIM with an orange 3g logo and ATT written in white.
Click to expand...
Click to collapse
That's the one mine came with but I haven't been using it, I've been using a really old Cingular branded SIM.
I'm going to switch to the blue/white one though to see if it helps with my dropped calls. If not, I'm going to go to the store to see about the new orange one.
Okay I've still experienced all problems with the new blue one. I called CS and they have shipped me an Orange SIM.
kyphur said:
Okay I've still experienced all problems with the new blue one. I called CS and they have shipped me an Orange SIM.
Click to expand...
Click to collapse
Man, I really would have thought a sim swap would have fixed the issue. I can see one bad fuze, but two in a row doing the exact same thing. Thats a serious issue. Im really hoping that the new orange one fixes the issue. I, from a technical aspect can understand why this is happening and that is what this new SIM is supposed to correct. Lets hope!!
KD8DNS said:
Man, I really would have thought a sim swap would have fixed the issue. I can see one bad fuze, but two in a row doing the exact same thing. Thats a serious issue. Im really hoping that the new orange one fixes the issue. I, from a technical aspect can understand why this is happening and that is what this new SIM is supposed to correct. Lets hope!!
Click to expand...
Click to collapse
Going to get my orange SIM in about 30 minutes. I'll test and report back.
I just picked up a new SIM card (71247D) to replace my old Cingular 3g 8525 card, and as I was driving back from the AT&T store, my phone dropped a call 3 times! Do I have to wait a period of time before AT&T's network or the phone provisions itself for the card & services? If not, then the new card seems to be no better than my old one.
In addition, my 8525 dropped plenty of calls, while an old Blackberry, like the 8700g was flawless in phone quality in the same areas. I am in Phoenix in 1900 PCS.
dexjaz said:
I just picked up a new SIM card (71247D) to replace my old Cingular 3g 8525 card, and as I was driving back from the AT&T store, my phone dropped a call 3 times! Do I have to wait a period of time before AT&T's network or the phone provisions itself for the card & services? If not, then the new card seems to be no better than my old one.
In addition, my 8525 dropped plenty of calls, while an old Blackberry, like the 8700g was flawless in phone quality in the same areas. I am in Phoenix in 1900 PCS.
Click to expand...
Click to collapse
It can take up to an hour for all the data provisioning to be burnt to the sim. Usually right out the store just the phone side is active.
KD8DNS said:
It can take up to an hour for all the data provisioning to be burnt to the sim. Usually right out the store just the phone side is active.
Click to expand...
Click to collapse
OK, had my new sim card for a little over an hour. No dropped calls so far. I also don't know hwo or why but I have 2 more bars of 3G now. Before I never got above 2 bars of 3G. Now I have 3 bars minimum but mostly 4 bars. It's a little too early to find out about the random resets, but so far so good. Thanks for the heads up. Fingers crossed.

Check your similar card

My phone has been running super slow ... called national help desk.. was told i had a OLD 2g sim card... Rep said NEW SIM CARDS have a black TM and then a number on gold side of similar card.. might wanna check yours... after my 4g sim was switched there was a huge increase in 4g internet speed...
sent from my rooted mytouch 4g
surfnhawaii808 said:
My phone has been running super slow ... called national help desk.. was told i had a OLD 2g sim card... Rep said NEW SIM CARDS have a black TM and then a number on gold side of similar card.. might wanna check yours... after my 4g sim was switched there was a huge increase in 4g internet speed...
sent from my rooted mytouch 4g
Click to expand...
Click to collapse
Oooh lord not this BS again. Hey guy why spread these rumors for? Do you work for TMobile and trying to get people to buy SIM Cards for $9.99? The fact is this theory has actually never been proven and there are people like myself who can verify who used 2-3years simcard and saw same speed. But the thing is old simcard had less memory for storage along with limit as how many time it could connect to the network for data connection before burnt out but sim could still be used for voice and edge. There is no such thing 4G simcard lol its just another failed attempt at cheap marketing go test your old "3G" simcard in MT4G and compare it with new "4G" simcard I grantee it you will not see any results, lets not fall for the companies BS okay folks this is what we call placebo effect.
Dude I have no idea what the heck your talking about.. or if you know what your talking about yourself..
Anyway my phone NOW has a UICC 4g sim card now, the old card was NOT A VICC card and help desk Rep said that old sim card should not have been Put in my phone to begin with, it was a oversight on tmos part. (Note it was placed in phone by MANAGER.. LOL!) .. the sim pattern on gold side of sim looks totally different than the gold contact side on old sim card (slow one!) Old Had several sections on the gold contact side, new one has FEW sections. Tmo national help desk verified i had new and correct sim card now. After it was swapped out at tmo, i called help desk back, and they said ".. looking at your phone i now see to have a 4g sim..." and he said its a VICC SIM..
Anyway phone is at least 4x faster on 4g.. i went from 1.2 mbps to 4.2 mbps while at store and with VICC sim... so for me it was the sim, i wouldnt have believed it myself if i had not see it myself on same phone at exact same spot with different sim cards...
Again if your internet is slow and it shows "H" check your sim card.
Again it was free to swap old sim for a new sim .. and it made a huge difference on my phone here in Hawaii.
sent from my rooted mytouch 4g
Old sim...
http://www.speedtest.net/android/35832797.png
NEW VICC SIM....
http://www.speedtest.net/android/35832736.png
Pictures speak for themselves...
sent from my rooted mytouch 4g
BlackSHELF said:
Oooh lord not this BS again. Hey guy why spread these rumors for? Do you work for TMobile and trying to get people to buy SIM Cards for $9.99
Click to expand...
Click to collapse
Boy, your a ARROGANT jerk
sent from my rooted mytouch 4g
Ya I don't know what I'm talking about last time I checked I was the network admin with 2years sIC in telemetry. Matter of fact I know one of the foremost authority in person with PBE as he manage and builds and consults for FCC. You going to teach me the HSPA+ Rv1? Do you even know how to modify the setting manually? Much less access it? Lol @ national desk center. H can mean anything as you can access the data via UTMS and HSDPA. Most problem happens as people like you keep taking it out for silly reasons like this as its delicate. Don't ever confuse defect with standard go find me 4G simcard for GSM.
PS: There is no such thing as VICC 4G SimCard, go find me technical doc for it.
Sent from my HTC Glacier
surfnhawaii808 said:
Old sim...
http://www.speedtest.net/android/35832797.png
NEW VICC SIM....
http://www.speedtest.net/android/35832736.png
Pictures speak for themselves...
sent from my rooted mytouch 4g
Click to expand...
Click to collapse
That proves what your defect card? Do I need to pop my old simcard and take some silly photo with actual network overhead which you can't access and show my point which is direct contradiction to your so called finding which is defect. Go post this in official TMo forum and see what happens lol also bring those national desk techs to join. This is just isolated how come it can't be replicated?
Sent from my HTC Glacier
BlackSHELF said:
Ya I don't know what I'm talking about last time I checked I was the network admin with 2years sIC in telemetry. Matter of fact I know one of the foremost authority in person with PBE as he manage and builds and consults for FCC. You going to teach me the HSPA+ Rv1? Do you even know how to modify the setting manually? Much less access it? Lol @ national desk center. H can mean anything as you can access the data via UTMS and HSDPA. Most problem happens as people like you keep taking it out for silly reasons like this as its delicate. Don't ever confuse defect with standard go find me 4G simcard for GSM.
PS: There is no such thing as VICC 4G SimCard, go find me technical doc for it.
Sent from my HTC Glacier
Click to expand...
Click to collapse
Dude, all he did was share an experience he had. He didn't tell anyone to go give money to tmo. He had an old card that wasn't working well for whatever reason and a replacement fixed the issue. You may be right about the technicalities in this regard, but nobody respects an arrogant **** even when he is right.
Sent from my HTC Glacier using XDA App
i foresee Option visiting this thread...shortly
TJBunch1228 said:
Dude, all he did was share an experience he had. He didn't tell anyone to go give money to tmo. He had an old card that wasn't working well for whatever reason and a replacement fixed the issue. You may be right about the technicalities in this regard, but nobody respects an arrogant **** even when he is right.
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
Now if he said that then we wouldn't be having problem. But you have to understand that not everyone is registered in XDA as so many folks just browse web and come here from search. People who don't understand will read it and waste money on thing that haven't been even proven. Like I said it was defect which I can live with that's the beauty of forum if you start a thread lol then post some screenshots then try to push some miss information claiming its correct because some fools at desk center with CompITA certified said so then it has to be corrected. Btw who comes online for respect? You don't have to know me or like me but you will know the truth even when its little bitter. Without people like me they would have a blast at gimmick targeting users who don't know better.
Sent from my HTC Glacier
surfnhawaii808 said:
Old sim...
http://www.speedtest.net/android/35832797.png
NEW VICC SIM....
http://www.speedtest.net/android/35832736.png
Pictures speak for themselves...
Click to expand...
Click to collapse
I have a question about the pics you posted... From the time stamp the old card was tested after you tested the new card? Doesn't tmo cancel the old card to transfer your data to the new one? And you had a minute to power off, switch card, boot up and test again?
crxtasi said:
I have a question about the pics you posted... From the time stamp the old card was tested after you tested the new card? Doesn't tmo cancel the old card to transfer your data to the new one? And you had a minute to power off, switch card, boot up and test again?
Click to expand...
Click to collapse
Not to mention that the old sim was done after the new one based on the times....
From my permarooted 1209mhz G2 with CM7 nightly 6
When I had tmobile change my sim card I had to give them the new sim number so they would disable old one and enable new one. That was instantaneous but.... One minute to replace card, retest....?
Sent from my HTC Glacier using XDA App
Fact: "4G sim cards" are a gimmick..for now at least.
Fact: Older sim cards have had several documented issues with slower data and dropped/missed calls. Why else do you think it is *recommended* to change to the newer versions?
Fact: T-Mobile does NOT charge for a sim swap. However, they do charge (in-store) if you're requesting a new one and don't have the old one with you.
As for the pictures though, I'm gonna call them bogus. I just felt that some things needed subtle clarity without being a douchebag.
Sent from my HTC Glacier using XDA App
I understand that you're just trying to state the facts and such but the op had success in doing what he did and that's why he's sharing it with us. What other explanation do you have for his success?
Sent from my HTC Glacier using XDA App
vikashfoolsu said:
I understand that you're just trying to state the facts and such but the op had success in doing what he did and that's why he's sharing it with us. What other explanation do you have for his success?
Sent from my HTC Glacier using XDA App
Click to expand...
Click to collapse
Read the whole thread you will understand it.
1) Original SIM defected.
2) Old SIM deactivated when new activated.
Don't forget explanation means nothing as we want results which means under same condition everyone should be able to replicate it. Then only then can it be called facts as its applicable proven.
surfnhawaii808 said:
Old sim...
http://www.speedtest.net/android/35832797.png
NEW VICC SIM....
http://www.speedtest.net/android/35832736.png
Pictures speak for themselves...
sent from my rooted mytouch 4g
Click to expand...
Click to collapse
Uicc sim card.... and yes it will make a difference BC old Sims are rated at 90000 connections. The Uicc sim cards are unlimited connections and support faster provisioning.
http://www.justaskgemalto.com/en/communicating/tips/what-uicc-and-how-it-different-sim-card
sent from my rooted mytouch 4g
sk337sk337 said:
Uicc sim card.... and yes it will make a difference BC old Sims are rated at 90000 connections. The Uicc sim cards are unlimited connections and support faster provisioning.
Click to expand...
Click to collapse
Now taking it that since we are using HSPA+ Rv1 the limit is 21mbps which is throttled to 14mbps on MT4G and TMo close to 7mbps now as you can see half of that mostly used on UTMS/HSDPA. Now far as the unlimited connection goes as we are aware of that as I stated but far as provisioning faster tier goes it subjective. As this has been discussed in the past with little to no result.
surfnhawaii808 said:
http://www.justaskgemalto.com/en/communicating/tips/what-uicc-and-how-it-different-sim-card
sent from my rooted mytouch 4g
Click to expand...
Click to collapse
Thank you for not understanding what you read and posting the first thing you found on Google search.
Is there a possibility that this could be explained by an old and worn-out card as opposed to technical differences?
I'm using a 5 year old card and it seems fine.
Sent from my HTC Glacier

Any new info on switching back and forth between LTE phones and Standard 3G phones?

Given the TBolt has the sim card, it seems it would be a little crazy to switch back and forth (if not impossible). This issue was touched a while ago, but is there an easier way yet? I guess anytime you wanted to switch back to the tBolt you needed to get a new SIM card. Is this still the case? Or can you use the website to switch back and forth between phones.
Reason I am asking is that I would like to use the iPhone during my work day since all of our machines are Apple based... and tBolt any other time. It just doesn't seem possible unless something changed?
I was also wondering how this would work. I have several phones and, until recently when I got my Tbolt, would switch between them quite often. Now with my first 4G phone, I wasn't sure that would work. From your post, it sounds like I could go online and switch from my Bolt to one of my 3g devices as I always have, but going back to the 4g Bolt might be a problem? I don't have 4g in my area, but I really am liking my bolt and don't feel the itch to switch devices yet, but I would like to be able to have the option.
Why not just call VZW and ask ?
That would be the easy way to answer your question.
Sent by my HTC Incredible
jbh00jh said:
Why not just call VZW and ask ?
That would be the easy way to answer your question.
Sent by my HTC Incredible
Click to expand...
Click to collapse
They give different answers each time you call! Depends who you talk to.
if it helps, sim cards are sim cards and the one in the tb (though it works in a slightly different way than what would be normal for a sim) is the same as any other sim card. However, if you switch to activating a 3g phone without a sim card, they will deactivate your tb sim card for sure. They may even if you don't, just because they're verizon and are slightly clueless on how sim cards work still.
psufan5 said:
Given the TBolt has the sim card, it seems it would be a little crazy to switch back and forth (if not impossible). This issue was touched a while ago, but is there an easier way yet? I guess anytime you wanted to switch back to the tBolt you needed to get a new SIM card. Is this still the case? Or can you use the website to switch back and forth between phones.
Reason I am asking is that I would like to use the iPhone during my work day since all of our machines are Apple based... and tBolt any other time. It just doesn't seem possible unless something changed?
Click to expand...
Click to collapse
Can you ever switch phones online without calling Verizon. I have never been able to do it other than when setting up maybe a new phone but never switching back to an old one. Good luck though it would be nice to be able to freely switch. I have a DInc and OG Droid just sitting here
Sent from my ADR6400L using XDA Premium App
Switching from 4g to 3g phones you have to call in each time
Sent from my Transformer TF101 using XDA Premium App
I have tried switching from 3g phone to 4g phone and it is a pain. You need to call or go into the store and get a new sim card each time. The minute you place a 3g device on your 4g account the sim card is deactivated.
I switch back and forth now because i talked the store manager into giving me a few sim cards. You can also call every other day and have the customer service send you a new one. They are free but some stores will try to charge you.
Once you have the sim card all you need to do is turn off the 3g phone, place the new sim card in and it should activate itself.
Wow thats pretty sad that its this difficult.
I had tried this once and it brought up a question that I did not have the guts to answer myself. If you went back to 3g for a short while then afterwards reactivated on 4g would you loose the grandfathered unlimited data?
Sent from my HTC ThunderBolt using XDA Premium App
theryanguy said:
I had tried this once and it brought up a question that I did not have the guts to answer myself. If you went back to 3g for a short while then afterwards reactivated on 4g would you loose the grandfathered unlimited data?
Sent from my HTC ThunderBolt using XDA Premium App
Click to expand...
Click to collapse
No since you aren't changing your plan
Sent from my Transformer TF101 using XDA Premium App
Just talked to a VZW rep on the phone, who I'm assuming went to talk to a supervisor or a tech, and she said as long as I keep the sim card in a place where the gold contacts don't get harmed (like in the phone), then I can keep the same sim card between activations, I just have to either call in to switch back to the TB or activate it online.. She talked to someone about this after I asked if I could have a few sent to me, so I'm assuming whomever told her this at least had some knowledge on the situation, but I guess we'll find out when it's time to switch back
joshnichols189 said:
No since you aren't changing your plan
Sent from my Transformer TF101 using XDA Premium App
Click to expand...
Click to collapse
Awesome, thanks.
Sent from my HTC ThunderBolt using XDA Premium App
the verizon rep that told you you can keep the sim card between activations is wrong. The sim card for verizon doesnt store any data its just basically a key to there 4g service. They can only be used for one activation and once they are deactivated they are dead. The only way to switch back and forth would be to have a surplus of sim cards. You would still have to call in and have them activate the new sim card before using it.
Ii have done this a few times on my thunderbolt so I know from experience.
Not sure on that having multiple SIM cards is right. I have switched between my DX and Tbolt numerous times and never gotten a new sim card. I do have to call every time when reactivating the bolt though.
Sent from my HTC Thunderbolt using Tapatalk
I can't see how this would work since LTE and gsm cards aren't compatible. If you could do that, you could drop it in most of the decent BlackBerrys and run... But ya can't. Anyone telling you that you can isn't at all familiar with the specs.
What a pain in the butt.
Sent from my GT-P7510 using Tapatalk
just my experience...
Using the My Account web site, I can...
Change between multiple 3G phones, no problems.
Change from 4G/LTE phone to 3G phone, no problems other than... the Web site warns the LTE SIM will be disabled after 90 days of non-use, implying that you could re-use it for up to 90 days, BUT the SIM gets deactivated immediately.
If I try to change from 3G phone to 4G/LTE phone, no problems IF I have a NEW SIM card. If I try to re-use my SIM it fails and I need to call in. When I call in, its hit or miss if they can enter that same SIM back into the System (customer service can't, but tech support has done it) or make me get a new SIM.
I haven't tried switching in about 3 weeks. So I don't know if anything has changed since.
Also, I find it best to complete the equipment change before 11pm eastern, otherwise the device change could get hung up in VZW's switch/system and not complete/clear until the morning.
SIM card/switching from 4G to 3G
psufan5 said:
Given the TBolt has the sim card, it seems it would be a little crazy to switch back and forth (if not impossible). This issue was touched a while ago, but is there an easier way yet? I guess anytime you wanted to switch back to the tBolt you needed to get a new SIM card. Is this still the case? Or can you use the website to switch back and forth between phones.
Reason I am asking is that I would like to use the iPhone during my work day since all of our machines are Apple based... and tBolt any other time. It just doesn't seem possible unless something changed?
Click to expand...
Click to collapse
At this time, it is still necessry to relace the SIM card if changing from a 4G device to a 3G device. So, if you were to change devices each day, you would need a new SIM card each time. Please check out our forums for updates at our website. Go to the website for Verizon Wireless, click Contact Us, then Customer Forums. You can also sign up for email updates from this site.
Thank you and have a good day!
Christina B
VZW Support
Follow us on Twitter @VZWSupport
VZWSupport said:
At this time, it is still necessry to relace the SIM card if changing from a 4G device to a 3G device. So, if you were to change devices each day, you would need a new SIM card each time. Please check out our forums for updates at our website. Go to the website for Verizon Wireless, click Contact Us, then Customer Forums. You can also sign up for email updates from this site.
Thank you and have a good day!
Christina B
VZW Support
Follow us on Twitter @VZWSupport
Click to expand...
Click to collapse
verizon actually semi pays attention to xda

[Q][update] G2x p999 new sim causes wifi-calling dysfunction

Is anyone else having issues with their Wifi-Calling on T-mobile?
I find that the wifi-calling app gets stuck at the stage there the app reads: "Enabling..."
* This is on either stock unrooted GB ROM or Xboarder's tweaked GB.
* Happening on two different routers in two different homes, different ISPs. Both
were working previously.
* I noticed this recently upon returned home from a long trip. During the trip, I had good cell coverage and didn't need the wifi-calling function anyway.
* T-mobile CSR reports an outage:
_Irina M: Ok, we are experiencing an issue with the G2X not able to establish a WIFI connection.
_Irina M: I will post the outage for you.
_Irina M: EFFECTIVE DATE: 11/7/11 OUTAGE TYPE: UMA...................................
MARKET AFFECTED: All
...................................
CUSTOMER IMPACT: G2X Cannot Activate Wifi Calling
T-Mobile subscribers may be reporting issues with the G2X encountering errors when attempting to activate Wifi calling. The device may show "enabling" but never connects.
Please Note: This issue is pending a software update but until this is released customers can upgrade to an UICC SIM card to resolve this issue.
MARKET/SERVICE IMPACTS TO: Global / Wifi Calling
CAUSE: n/a
* Despite this answer from t-mobile, I think it might be related to my recent change of a SIM card. I was having another unrelated issue and CS suggested I get a new SIM. The new SIM did not solve my issue. But now I have a new one. I did get a new SIM today, but this did not solve my problem. For the life of me, I cannot find my old SIM to reactivate.
Any one having the same issue? Can anyone test their phones to see what is what? Thanks.
11/18/11... I tested using a sim card from an Sgs4g with working 4g and wifi-calling. With this SIM in my g2x, wifi-calling was working again. It appears to me that my newer SIM cards x 2 break wifi calling.
If only I had my old card. Ironic that there was nothing wrong with that card in the first place.
I don't use wifi calling but my wifi does cut out and stop working randomly. Right now I'm only showing one bar even though I'm Lees than 10 ft from my router. This phone seems to have random wifi issues and I remember reading something online conforming it, but I don't remember where.
Sent from my G2X
I have that problem (stuck at "enabling") a couple of times a month. I generally take that as an indication that it's time for a reboot, and so far a reboot has always fixed the problem for me.
No I'm experiencing it too. It was working last night I know (at home) and it was working this morning.
My GF just called me at work, which was odd... and this makes sense. My WiFi Calling is stuck at "Enabling" also.
Tmobile has gotten rid of WiFi Calling on the newer phones because they are moving to a "new" standard. The new standard requires a new SIM card. WiFi Tethering is also not working out of the box.
Something is strange.
I even went into Apps and did a Force Stop and cleared cache and tried to launch it again... it just closes and never enables.
*UPDATE*
Now its working.
I never have connection problems, but the sound quality is terrible. The person on the other end sounds real robotic and choppy. It was like this even on my blackberry.
Now its saying invalid SIM. Sweet.
G2x - 2.3.7 CM7
Transformer - 3.2 Revolver OC/UV
No problem here just try it one minute ago.
Sent from my LG-P999 using XDA Premium App
See my update above. I think T-Mobile has changed the sim cards but not yet updated the software. If anyone is using wifi calling, then hold on to your cards until they fix this.
Sent from my LG-P999 using xda premium
substanceneil said:
See my update above. I think T-Mobile has changed the sim cards but not yet updated the software. If anyone is using wifi calling, then hold on to your cards until they fix this.
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
I have never used it but decided to test it because of this thread. Works great on weapon 3.0.
I bought an old sim card off eBay but haven't activated. May try it out. I'm on CM7 and it hasn't worked in days.
G2x - 2.3.7 CM7
Transformer - 3.2 Revolver OC/UV
I am using an old similar card, wifi calling working fine, but I can't use Bluetooth.
Nightly 199, faux cm kernel.
Bluetooth and Wi-Fi calling should not be affected by your SIM card in any way on the G2x.
You need a gsa sim. These sim cards are made in the usa. Yea America!!!! **** yeah.
No but on some real talk the sim cards made in America are good quality.
India, China, and Mexico made ones do not support wifi calling. Plus they go out every month
Sent from my LG-P999 using XDA Premium App
Ninosmaxima said:
You need a gsa sim. These sim cards are made in the usa. Yea America!!!! **** yeah.
No but on some real talk the sim cards made in America are good quality.
India, China, and Mexico made ones do not support wifi calling. Plus they go out every month
Sent from my LG-P999 using XDA Premium App
Click to expand...
Click to collapse
Gba sim*** check your apn settings. Or try clearing the wifi calling app data
Sent from my LG-P999 using XDA Premium App
I swapped my wife's sim card (about one year old) with my newer one. I asked customer care to reprogram our phone numbers. Either card supports wifi calling in the Galaxy S 4g. The old card supports wifi calling in my g2x.
When I get to an area of known good coverage, I will run a speedtest to see if I lose any speed using the older card.
Sent from my LG-P999 using xda premium
Where and how to find old simcard?
I called Tmobile service yesterday. 3 different rep told me that I need newer sim which support 4G and wifi calling and offered to upgrade the new sim card for 20 bucks. I got mad and asked to talk with mananger. Finally a tech rep honestly told me that there is issue with wifi calling for G2X and their engineers are working on the fix, but no date of completion yet.
She sent me to a tmobile store to get a new sim card, and said it might solve the problem, but not sure 100%.
I went to the store, change new sim card at no charge. but the wifi calling still not working.
now, I saw people put the comment in this forum that we need old sim card. How do I indenfify the old sim card? what number? or serial number ect???
Can I get it from ebay?
Thanks
Alpharetta.
alpharetta said:
I called Tmobile service yesterday. 3 different rep told me that I need newer sim which support 4G and wifi calling and offered to upgrade the new sim card for 20 bucks. I got mad and asked to talk with mananger. Finally a tech rep honestly told me that there is issue with wifi calling for G2X and their engineers are working on the fix, but no date of completion yet.
She sent me to a tmobile store to get a new sim card, and said it might solve the problem, but not sure 100%.
I went to the store, change new sim card at no charge. but the wifi calling still not working.
now, I saw people put the comment in this forum that we need old sim card. How do I indenfify the old sim card? what number? or serial number ect???
Can I get it from ebay?
Thanks
Alpharetta.
Click to expand...
Click to collapse
The newer SIM will say TM9073. You gotta take it out and look at it.
e4e5nf3nc6 said:
The newer SIM will say TM9073. You gotta take it out and look at it.
Click to expand...
Click to collapse
OK.. I resolved the problem. I had TM9073 and it did not work with MUI ROM.. so I changed to newer sim card TM9102, and it still not work for wifi calling. I then read about the issue with MUI ROM. the wifi calling only work with CM7 ROM. So I reflash G2x with CM7, and still use TM9102 sim..
It takes 5 minutes to enable the wifi calling feature.. but it works now... so first thing first.. you need to make sure you have the correct ROM... and then sim.
Wifi calling on MIUI has only worked for me 3 times. That was on the first boot. I had the newer sim card. Just recently bought a older sim card and now wifi calling works for MIUI every time!!
alpharetta said:
OK.. I resolved the problem. I had TM9073 and it did not work with MUI ROM.. so I changed to newer sim card TM9102, and it still not work for wifi calling. I then read about the issue with MUI ROM. the wifi calling only work with CM7 ROM. So I reflash G2x with CM7, and still use TM9102 sim..
It takes 5 minutes to enable the wifi calling feature.. but it works now... so first thing first.. you need to make sure you have the correct ROM... and then sim.
Click to expand...
Click to collapse
It is the TM9073 Sim that is working properly on all other roms. The TM9102 is the Sim having problems with WiFi.

Sim card

Recently a buddy of mine picked up a couple of S lll's and I don't know how the subject came about but he was asked by the sales rep if he has a 4G sim card. He had no idea, turns out he did not and they upgraded him to a 4G sim for no charge. He states that now his data seems more responsive and quicker. Many of us have been with T-Mobile for a while and just kept using our original sim card when upgrading phones. What do you guys think, is this just a placebo or does it make sense and could we benifit from a new sim card. Also don't say this is wrong section that it should be in andriod general, I'd rather it be discussed in here with people I know it will help ween out the BS replies.
Sent from my SGH-T959V using xda app-developers app
I know when I was in a T-Mobile store a couple months ago and complained about data speeds being slow on my gnex the rep told me it's recommended to change Sim cards yearly. She gave me a new Sim and my data speeds almost tripled according to speedtest.net right there in the same location after multiple runs with both Sim cards, and my old Sim was a "4G" card.
Sent from my Nexus 7 using xda premium
95Z28 said:
I know when I was in a T-Mobile store a couple months ago and complained about data speeds being slow on my gnex the rep told me it's recommended to change Sim cards yearly. She gave me a new Sim and my data speeds almost tripled according to speedtest.net right there in the same location after multiple runs with both Sim cards, and my old Sim was a "4G" card.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
Do you know the reason for the bolded part?
Im sure Ill be told Im wrong but, with gsm phones the prl info is kept on the sim card. When towers are upgraded and added for some reason gsm carriers have not found a way to update the sim card OTA. Therefore you need to get a new sim card. This is what I was told by the local ATT/T-MO reps. A customer that was "evedropping" piped up and said nah man they could update it OTA but then they couldnt charge you the 5 bucks for a sim card. The look of horror on the reps face was funny.
Yes my local t-mo store is also a att store. Its not a corporate store just a franchise. They also use to be a alltel payment center.
After reading this thread I called T-Mobile and asked them about this since my sim card is 3yrs old...
They upgraded me for free.
So i headed over to a T-Mobile store and the Rep said yea i had a 2nd generation card and that with this new one...i will see a drastic change data and speed,and he was right,i do.
screenshots of speed tests or it didn't happen
Personally I don't care if anyone believes me lol.
Its up to you if you want a new sim card or not....its free and what's the harm...anyway I'm not here to prove or dissprove. Do what you want.
Shortbus-Driver said:
After reading this thread I called T-Mobile and asked them about this since my sim card is 3yrs old...
They upgraded me for free.
So i headed over to a T-Mobile store and the Rep said yea i had a 2nd generation card and that with this new one...i will see a drastic change data and speed,and he was right,i do.
Click to expand...
Click to collapse
Was it free?
Sent from my SGH-T959V using xda app-developers app
Yes its says that in the 2nd paragraph of my post and in your quotation of my post lol.
Also says that in the post directly above yours.
+1 to the free. In case I wasn't clear the rep gave me a new sim, not sold. Around here T-Mobile gives free replacement sim cards all the time as a trouble shooting method, myself and everyone I know has never had to pay for one.
And yes, she explained the whole updated towers like previous poster mentioned.
Sent from my Galaxy Nexus using xda premium
Wind gives free SIM's too when something doesn't work. My data worked, calling work, receiving txt's worked but I couldn't send a txt. I reflashed ROM's, everything, tried another SIM in my phone, sending txt worked fine. It was my card, new card, could send txt. It seems silly that everything worked but sending a txt and a new SIM fixed it.
getochkn said:
Wind gives free SIM's too when something doesn't work. My data worked, calling work, receiving txt's worked but I couldn't send a txt. I reflashed ROM's, everything, tried another SIM in my phone, sending txt worked fine. It was my card, new card, could send txt. It seems silly that everything worked but sending a txt and a new SIM fixed it.
Click to expand...
Click to collapse
Sometimes, when only my texting doesn't work, all I have to do is remove my sim and put it back it after about a minute.
Sent from my SGH-T959V using xda app-developers app

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