Related
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
Hey there xdadevs, newbie here. I'll try to keep this as detailed and to the point as possible.
Problem
So I've got a Cincy Bell XT720, and I've gotten it properly SIM unlocked and rooted. I'll go to search for networks, consistently pick up Wind Home, and then attempt to connect to it. I'll select Wind Home, and immediately get a notification that says that "Selected network (WIND Home) unavailable", but it'll continue to try to connect to Wind Home. 1-2 minutes later, I'll get a message saying that "Your SIM card does not allow a connection to this network".
What I've Done to Try and Fix It
- Configure APN settings properly
- Reseat SIM Card
- Load Cincy Bell Stock 2.1/Dexter Froyo 2.2/XDA Special RC1 ROMs
- Attempt everything mentioned in this thread here: (http://forum.xda-developers.com/showthread.php?t=974375)
What I think the Problem Is
- Radio/ROM config problem? Can't pinpoint it for the life of me.
- I KNOW it's not a hardware incompatibility problem, if that's a starting point. This is the Milestone XT720 and not the Motoroi, fully capable of supporting the HSDPA 1700/2100 bands that WIND Mobile uses for its 3G networks.
Any help I could get would be greatly appreciated. Right now, my only fallback is this horrid Huawei U1250...it works, but that's like saying that ramen noodles "works" in comparison to a banquet burger with fries. Thanks a ton in advance guys.
Lol, I'm using a CB XT720 on WIND as well, pretty cool. But yeah, mine is working without any issues. Go into a WIND store, show them your issue, and they should be able to replace the sim card. As mentioned in another thread, WIND had some issues with certain sim cards so that may be why your having the connection problems. If that doesn't help, then it's probably something to do with the phone itself.
tharan.a said:
Lol, I'm using a CB XT720 on WIND as well, pretty cool. But yeah, mine is working without any issues. Go into a WIND store, show them your issue, and they should be able to replace the sim card. As mentioned in another thread, WIND had some issues with certain sim cards so that may be why your having the connection problems. If that doesn't help, then it's probably something to do with the phone itself.
Click to expand...
Click to collapse
At least I know that the CB XT720 does work for sure...I can get WIND to check it out (the SIM was ordered back in December or so last year) or even get the phone replaced via Moto warranty if needs be (somehow, still warrantied until March next year). Thanks for the help!
my XT720 is from sigapore and i'm using it on WIND without any issues
using Dexter's froyo ROM
make sure you get the BLACK version of the SIM card, the WHITE SIM cards dies very often
i've replaced both of mines already, they died on their own, both on my Nexus S and XT720
other friends that i've on WIND also had the same problem, with other phones, they also had the WHITE SIM card
just show them the problem, they will change the SIM card for you.
oh! but you need to go to the Corporate WIND stores, not the resellers stores
AllGamer said:
my XT720 is from sigapore and i'm using it on WIND without any issues
using Dexter's froyo ROM
make sure you get the BLACK version of the SIM card, the WHITE SIM cards dies very often
i've replaced both of mines already, they died on their own, both on my Nexus S and XT720
other friends that i've on WIND also had the same problem, with other phones, they also had the WHITE SIM card
just show them the problem, they will change the SIM card for you.
oh! but you need to go to the Corporate WIND stores, not the resellers stores
Click to expand...
Click to collapse
Alright...I'm pretty sure I have the black one (black w/ white trim), but it wouldn't hurt to get a replacement. This one's been in a bricked G1, another G1 that got caught in a torrential thunderstorm (you can tell I don't have good luck with those things), a Huawei U1719, and a Huawei U1250. It's probably just got some age on it by now...flaky with my U1250 anyhow, random (relatively frequent) disconnecting, wouldn't connect the first couple of times, etc. Thanks again, be sure to let you guys know how it goes. =.=
Meh, still got a problem. Tried another SIM, went over to WIND...no such luck. I was told that although the phone may be SIM unlocked and it can see the networks on the 1700/2100 band, the radio's firmware may be locked to prevent a connection (the employee had a similar problem with another phone for Bell). Is there anyone on here who can hook me up with an unlocked radio or a WIND Mobile ROM that could help with this? O-^
Hmmm, strange because I was able to connect to WIND Home on the stock CB 2.1 ROM, Khals MIUI ROM, and Mz's CM6 as well. Perhaps, something is wrong with your baseband? I would try this, if possible, get a friend's sim card (anything but WIND/Mobilicity) and see if you connect to that network whether it be Rogers, Telus, etc. If it can connect, then the phone is able to latch onto the regular GSM frequencies. With regards to an unlock radio or baseband, I'm not sure how thats done but maybe someone else on the forum can help you with that.
For some reason, I'll pop in my Rogers SIM (account was probably deactivated though), and my Moto says:
Emergency calls only
ROGERS
Emergency calls only
Go to check my available networks and..."WIND" is the only one that comes up? No idea as to whether its Home/Away or 2G/3G...just "WIND". Not as if it'll let me connect or anything anyways, same flop as the previous attempts ("Your SIM card does not allow a connection to this network"). :/
http://forum.xda-developers.com/showpost.php?p=10001234&postcount=34 - AHA! Videotron and WIND use the same bands (1700/2100), and some digging around turned that up. Looks like they've been having problems too. Can anyone help pinpoint their radio for me? It seems like that might just do the trick.
Update:
http://forum.xda-developers.com/showthread.php?t=944258#11176044 <- Can someone confirm that this is safe for the XT720? If so, my gut instinct's pretty sure this is exactly what I need...the "freq_F_CN_026-850-2100-signed.zip" one appears to be for Canada, while "freq_F_US_342_107-850-1700-2100-signed.zip" does the frequencies right. O-^
Mann, all I had to do was pop in my sim card and off I went. I think there was a 3G fix around here somewhere, make sure to get someone's "approval" first (one of the more experienced guys) because it may damage your phone. Try this though...
Dial *#*#4636#*#*, go into phone information, and see if anything looks off.
As for frequencies, the country does not matter, the frequencies do...for WIND, you need 1700/2100.
do not use those Defy fixes, it'll probably kill your XT720
RyanGDI said:
http://forum.xda-developers.com/showpost.php?p=10001234&postcount=34 - AHA! Videotron and WIND use the same bands (1700/2100), and some digging around turned that up. Looks like they've been having problems too. Can anyone help pinpoint their radio for me? It seems like that might just do the trick.
Update:
http://forum.xda-developers.com/showthread.php?t=944258#11176044 <- Can someone confirm that this is safe for the XT720? If so, my gut instinct's pretty sure this is exactly what I need...the "freq_F_CN_026-850-2100-signed.zip" one appears to be for Canada, while "freq_F_US_342_107-850-1700-2100-signed.zip" does the frequencies right. O-^
Click to expand...
Click to collapse
Whew, alright. Good thing I asked first, thanks. I still can't get it to work properly...I'm more than likely going to have to ditch this thing and go with a G1 or a Touch Pro 2 if I don't have any better luck with it. Thanks for all the help though guys. :/
Have you flashed a sbf? If so, which one? If not did you buy this phone from Wind or somewhere else? If it is a baseband software problem, then perhaps flashing a different sbf will help (Maybe one of the North American ones-- CBW or brightpoint).
Mioze7Ae said:
Have you flashed a sbf? If so, which one? If not did you buy this phone from Wind or somewhere else? If it is a baseband software problem, then perhaps flashing a different sbf will help (Maybe one of the North American ones-- CBW or brightpoint).
Click to expand...
Click to collapse
STR_U2_04.1E.1_SIGNED_USASHLSTAB14P2XAPCNCBW039.0R_NACBW_P011_A006_HWp3_1FF (Cincinnati Bell)...that's the only .sbf that I can get RSDLite to recognize for some reason. Attempting to pull up one for the UK or the US Brightpoint for example leaves the File Properties section blank and my start button disabled. I have version 4.5.3, if that's any help. Any hope of a miracle here?
Also, I bought it from a third-party in the US...didn't know what carrier it was with, but after some digging around and checking the "S/W" I found it to be Cincinnati Bell. Ideally I'd be looking for a WIND sbf, but I don't think anyone here's managed to get their hands on one. I'm almost at the point of just trying to take it apart to see if there's something loose in the hardware. Someone else on here was saying that there was a loose cable or somewhat that was preventing their UMTS from working properly (can't find the link). Everyone's saying it should be working just fine, I can't really see any alternative besides the baseband perhaps being flaky.
RyanGDI said:
STR_U2_04.1E.1_SIGNED_USASHLSTAB14P2XAPCNCBW039.0R_NACBW_P011_A006_HWp3_1FF (Cincinnati Bell)...that's the only .sbf that I can get RSDLite to recognize for some reason. Attempting to pull up one for the UK or the US Brightpoint for example leaves the File Properties section blank and my start button disabled. I have version 4.5.3, if that's any help. Any hope of a miracle here?
Click to expand...
Click to collapse
Yup, that's the Cincinnati Bell sbf. The brightpoint one is essentially identical but unbranded--the only differences are things like default webpage in the browser and preloaded bookmarks, etc. I don't know a lot about basebands, but I do know the only way to change the baseband firmware currently is with sbf. I think yours is fine, though. AllGamer is our resident WIND expert, so if his advice didn't help, I'm afraid I don't have much more to offer.
Actually, if this is a Cincinnaiti Bell phone, maybe it's SIM locked to CBW...? I know both of mine are. Does anyone know how to test that? SIM locks are also black magick to me.
Yup, that's the Cincinnati Bell sbf. The brightpoint one is essentially identical but unbranded--the only differences are things like default webpage in the browser and preloaded bookmarks, etc. I don't know a lot about basebands, but I do know the only way to change the baseband firmware currently is with sbf. I think yours is fine, though. AllGamer is our resident WIND expert, so if his advice didn't help, I'm afraid I don't have much more to offer.
Actually, if this is a Cincinnaiti Bell phone, maybe it's SIM locked to CBW...? I know both of mine are. Does anyone know how to test that? SIM locks are also black magick to me.
Click to expand...
Click to collapse
Already removed the SIM lock (got that taken care of well beforehand)...I guess I'm on my own then.Thanks everyone, I appreciate the help regardless. :3
RyanGDI said:
Already removed the SIM lock (got that taken care of well beforehand)...I guess I'm on my own then.Thanks everyone, I appreciate the help regardless. :3
Click to expand...
Click to collapse
i have a hunch you are still SIM locked, that error message ("Your SIM card does not allow a connection to this network") you keep having, kinda of suggest that
an easy way to find out, is to see if anyone have an extra unused Cinncinaty Bell's SIM card, and send it to you, so you can pop it in, and if it doesn't give you any error message, but "R"oaming, then that is a good dead indicator that the phone was not properly unlocked.
also in regards to the stock ROMs
you should have no problem flashing any of the .sbf files
my phone was originally an Asian one, then i flashed it to use the UK ROM, and after that i flashed the Dexter 2.2 to it
So are you saying that its possible that an unlock code can "unlock" the device (pass the unlock code request) and allow it to accept a foreign SIM, but still fail to allow it to connect to the SIM's networks? It'd make perfect sense if Rogers was an affiliated network with Cincinnati Bell (for roaming), since it'd be "mutual ground" between WIND and CBW. And then the SIM wouldn't be able to connect to WIND's exclusive 3G network since it was never on the "allowed" networks as defined by Cincy? =.=
if you are in Toronto, i'll suggest you go to P-mall, any of those cell phone stores there can help you unlock the phone for sure
or you can try your luck online with different ways to unlock the phone
quite sincerely we never really talked much about SIM unlocking of this phone within this forum.
perhaps a DEV might be able to help you figure out how to unlock it for free
because if you go to the malls they might charge you an unlocking fee regardless
although with the chinese places you can argue it didn't work, and they will not charge you for the unlocking
Have any other crack flashers out there experienced no cell service, no data or stuck on 3g after switching roms? I'm on my second lte sim card?
ericsdeadinside said:
Have any other crack flashers out there experienced no cell service, no data or stuck on 3g after switching roms? I'm on my second lte sim card?
Click to expand...
Click to collapse
I'm experiencing the same symptoms as you. Sometimes 4g will pop up but it mostly stays in 2g, 3g, or mostly None. I have tried going back to stock and switching roms. I'm guessing its Samsungs poor antenna design? Or could it be, because we are in the same area? And some s3's are defective and wont communicate to central NY's towers? I have gone to verizon to replace the lte sim card as well. I have seen a few others on here that are having similar problems with no real answer.
Pidge0 said:
I'm experiencing the same symptoms as you. Sometimes 4g will pop up but it mostly stays in 2g, 3g, or mostly None. I have tried going back to stock and switching roms. I'm guessing its Samsungs poor antenna design? Or could it be, because we are in the same area? And some s3's are defective and wont communicate to central NY's towers? I have gone to verizon to replace the lte sim card as well. I have seen a few others on here that are having similar problems with no real answer.
Click to expand...
Click to collapse
I'm in DC right now so I don't think it's the area. I was at a verizon store for like an hour while the guy tried to get the new sim card to work. I was on cm11 and then I restored a stock rom. Still no signal but i had data. Went to BestBuy to get a new replacement. Then the stupid thing started working like 15 minutes after I left. So I don't know if I'm going to take the replacement or not.
ericsdeadinside said:
I'm in DC right now so I don't think it's the area. I was at a verizon store for like an hour while the guy tried to get the new sim card to work. I was on cm11 and then I restored a stock rom. Still no signal but i had data. Went to BestBuy to get a new replacement. Then the stupid thing started working like 15 minutes after I left. So I don't know if I'm going to take the replacement or not.
Click to expand...
Click to collapse
I was actually in NYC when it started. Was running PA3.99 at the time then kept flashing other roms and going back and forth from stock . Did they offer to replace it as defective?
Yeah. I have the BB insurance. The new one will be in tomorrow. I think I'm going to refuse it because I feel like going through the hassle and I don't think it's a hardware issue.
I'm kind of under the impression its a hardware issue with mine at least since it has very minor water damage. I may try to tackle replacing the internal antenna so i don't have to shell out the money for insurance. Although I have esecuritel, they have allowed me to upgrade devices(originally had a razr maxx). Also they give me a new phone out of box in store. So i'm kind of up in the air ATM.
Hi everyone,
has any of you ever had network problems, as can be seen in the video?
For a few days now both network connections have been breaking down when I try to make a call. But that doesn't always happen. Sometimes I can make 10 calls in a row and everything is fine, and sometimes nothing works. It doesn't matter which SIM I use to make the call. The problem occurs with both cards. If that happens, then either directly when dialing a number, or immediately after hanging up.
I've never seen anything like this. And I wonder if it's the software, the SIM tray, one of the cards or the network operator itself.
Can anybody please help me? This is quite annoying.
PS: Sorry for the German settings. „Keine SIM-Karte“ = No SIM card // „Dienst nicht verfügbar“ = no service
Clear sim tool kit data
Network reset
Clear system cache
Make sure the access point names are correct
blackhawk said:
Clear sim tool kit data
Network reset
Clear system cache
Make sure the access point names are correct
Click to expand...
Click to collapse
Thanks for the advice, but this didn't help.
I did these 4 steps, but the first time I tried to call, both connections dropped again. Can there be a hardware problem at all? Looks more like a software issue, doesn't it?
mathias.ngr said:
Thanks for the advice, but this didn't help.
I did these 4 steps, but the first time I tried to call, both connections dropped again. Can there be a hardware problem at all? Looks more like a software issue, doesn't it?
Click to expand...
Click to collapse
The sim card, the usual hardware suspect...
They can be damaged by ESD; handled like a stick of ram.
ESD may not manifest itself for weeks, months even years. Insults are cumulative.
It's not expensive but it is a pain, try to not damage it as it left the plant A-OK.
Just like ram sticks poor handling is the cause of almost all sim card failures.
blackhawk said:
The sim card, the usual hardware suspect...
They can be damaged by ESD; handled like a stick of ram.
ESD may not manifest itself for weeks, months even years. Insults are cumulative.
It's not expensive but it is a pain, try to not damage it as it left the plant A-OK.
Just like ram sticks poor handling is the cause of almost all sim card failures.
Click to expand...
Click to collapse
So, am I getting you right? I just go to the store and have the SIM card replaced and everything should work again?
I've tried a few things now. If I set SIM 2 to GSM, everything is fine. The connection doesn't break. I believe it is the 3G connection. And that's why these crashes could occur when I make calls. SIM 2 doesn't support VoLTE, so it switches to 3G.
EDIT: I've tried different things now. I swapped SIM 1 and 2 back and forth. I also used my two SIM cards alternately with a third SIM card. The problem persists. Could a hard reset help or should I send the device for repairs straight away?
Same problem here. Setting sim 1 to GSM only, and sim2 to LTE fixed my problem for a while. This has something to do with dual sim handling.
jerrydrake said:
Same problem here. Setting sim 1 to GSM only, and sim2 to LTE fixed my problem for a while. This has something to do with dual sim handling.
Click to expand...
Click to collapse
This is soooo anoying. Have you had this problem for a long time or did it only come recently? Could this have something to do with a recent update?
I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.
jerrydrake said:
I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.
Click to expand...
Click to collapse
Damn, same here.
Have you tried cleaning the sim cards with rubbing alcohol?
Then put them back without touching the metal contacts.
Didgesteve said:
Have you tried cleaning the sim cards with rubbing alcohol?
Then put them back without touching the metal contacts.
Click to expand...
Click to collapse
No, I don't see any point in doing that. I swapped the SIM cards and even tried other cards and the problem was still there. If something had to be cleaned, it would be the SIM tray. But as already written, there are no disconnections when a SIM is operated in 2G. I think that rather means that it is a software problem.
jerrydrake said:
I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.
Click to expand...
Click to collapse
I have this same problem with phone dropping off the network. For me it started after the first Android 11 update. I have full signal levels at home but if I try to make a call signal level for both sim cards drops and I get a message that mobile network is not available. Doesn't happen always but pretty often.
I'm pretty sure it has something to do with how the phone handles dual-sim operations...
Juu_5o said:
I have this same problem with phone dropping off the network. For me it started after the first Android 11 update. I have full signal levels at home but if I try to make a call signal level for both sim cards drops and I get a message that mobile network is not available. Doesn't happen always but pretty often.
I'm pretty sure it has something to do with how the phone handles dual-sim operations...
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I am glad, I am not the only one, who is facing this problem. I already thought, I have to send my phone back. So, we have to wait for a fix.
Must be patient. There is also bluetooth problem(disconnecting from devices). It looks like they were too fast with android 11.
Since the last update(.159), i also have the drop out problem. Starting to feel sorry for buying it...
So, let's hope the new .222 update, which has just arrived, will fix this.
EDIT: no, it doesn't.
mathias.ngr said:
So, let's hope the new .222 update, which has just arrived, will fix this.
EDIT: no, it doesn't.
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Yeah, I even had to restart after the update, in order for the second SIM to become active...
Edit - and the problem is even worse. Almost after every incoming call I lose signal to both sims...
Edit II - I wanted to try to switch sim 2 to gsm only network, and noticed that there's 5G available for it too, after the update. Before that there wasn't such an option....
bo6o said:
Yeah, I even had to restart after the update, in order for the second SIM to become active...
Edit - and the problem is even worse. Almost after every incoming call I lose signal to both sims...
Edit II - I wanted to try to switch sim 2 to gsm only network, and noticed that there's 5G available for it too, after the update. Before that there wasn't such an option....
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Since I use the second SIM only for business calls, I have already set it to GSM only. Today I noticed that I still have outages. So apparently to force 2G is no longer of any use. :/
About 5G: It has been active on my device since I got it. Perhaps there was an update on this from your carrier.
bo6o said:
Since the last update(.159), i also have the drop out problem. Starting to feel sorry for buying it...
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same here and the problem is very annoying cause my everyday job is in a car. is 100% software problem. 650€ for a phone you can't use it as a phone.
Hi, I don't have signal drop but yes the WiFi drip in my room, I had a xz premium and never happened on it
I used to exchange mobile phones with others. When I took it, I said that it could work normally and there was a signal. It only took a few days
aibie520 said:
I used to exchange mobile phones with others. When I took it, I said that it could work normally and there was a signal. It only took a few days
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Dude, if u wanna have detail supports/help to solve your issues, at least, make ur issue clear and as detail as possible. How u suppose others can help u out with only few words and no detail information like this dude?
LinhBT said:
Dude, if u wanna have detail supports/help to solve your issues, at least, make ur issue clear and as detail as possible. How u suppose others can help u out with only few words and no detail information like this dude?
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Some words of the translator I use may not be very clear.Now my one plus8 yes T-MobileThe network lock has been unlocked. But the problem now is that there is no signal. No network. Only the operator's name.
aibie520 said:
Some words of the translator I use may not be very clear.Now my one plus8 yes T-MobileThe network lock has been unlocked. But the problem now is that there is no signal. No network. Only the operator's name.
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I missed the part where you actually contacted the provider to have your IMEI or SIM reprovisioned.
rodken said:
I missed the part where you actually contacted the provider to have your IMEI or SIM reprovisioned.
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Do you mean to let me contact the supplier to reset my IMEI and SIM?
My mobile phone was deceived, and I bought it with my good mobile phoneOne plus8I didn'tT-Mobile account, any purchase information.
aibie520 said:
Do you mean to let me contact the supplier to reset my IMEI and SIM?
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Negative. Supplier and network provider are two different things.
-- Your case could be a service glitch or distorted configurations.
rodken said:
Negative. Supplier and network provider are two different things.
-- You case could be a service glitch or distorted configurations.
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The service fault does not exist. Because I replaced several SIM cards without signal, and I replaced these SIM cards with other mobile phones, all of them can use the network normally. As for the loss of configuration, I don't know how to operate it. I have been using it for several days. There is a signal. Suddenly, there is no signal one day. I have a signal from HO2, update to color13, and suddenly there is no signal at color13。I can't get the network when I change the system back and forth in Ho2.color13.oos.
aibie520 said:
The service fault does not exist. Because I replaced several SIM cards without signal, and I replaced these SIM cards with other mobile phones, all of them can use the network normally. As for the loss of configuration, I don't know how to operate it. I have been using it for several days. There is a signal. Suddenly, there is no signal one day. I have a signal from HO2, update to color13, and suddenly there is no signal at color13。I can't get the network when I change the system back and forth in Ho2.color13.oos.
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Click to collapse
Unless you and I referring to apples and oranges. Your issue has nothing to do with which operating system you are using or have updated to.
-- Reprovisioning resets your connection to the server and sets everything that reps can modify back to default settings.
-- Most carriers place the blame on user meddling on their device causing misprovisioning(s).
Reprovisioning refreshes the data on the UICC/SIM and APN settings.
It can also mean them changing the QCI settings on the UE and UPF at the core layer (meaning changing / presumably increasing the allowed speed of your service).
In simple terms, provisioning is the process of preparing and equipping a network to allow it to a provide service to its users. SIM Card provisioning is a process to activate said SIM and services before it is used by a customer.
Reprovisioning of a SIM is nothing but repeating the process from scratch.
In the event that you feel that it could be something else besides the SIM and/or IMEI, feel free to enlighten me.
rodken said:
Unless you and I referring to apples and oranges. Your issue has nothing to do with which operating system you are using or have updated to.
-- Reprovisioning resets your connection to the server and sets everything that reps can modify back to default settings.
-- Most carriers place the blame on user meddling on their device causing misprovisioning(s).
Reprovisioning refreshes the data on the UICC/SIM and APN settings.
It can also mean them changing the QCI settings on the UE and UPF at the core layer (meaning changing / presumably increasing the allowed speed of your service).
In simple terms, provisioning is the process of preparing and equipping a network to allow it to a provide service to its users. SIM Card provisioning is a process to activate said SIM and services before it is used by a customer.
Reprovisioning of a SIM is nothing but repeating the process from scratch.
In the event that you feel that it could be something else besides the SIM and/or IMEI, feel free to enlighten me.
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Click to collapse
I'm wondering if he's trade-in a stolen device or not. Since due to TMO's policies ( As mentioned in other topic, I have KebabTMO ) the device will be network locked permanent. And as I did lots of research on this matter with 8T, the only solution is to ditch the modem and replace with another one, then force EDL flash Global fw to convert it to global.
Using tools ( even Qualcomm Tools or other pro tool specific made for OP devices or to work with deivce's modem are both useless in this case, I even used QXDM, QCAT, along with QPST )
rodken said:
Unless you and I referring to apples and oranges. Your issue has nothing to do with which operating system you are using or have updated to.
-- Reprovisioning resets your connection to the server and sets everything that reps can modify back to default settings.
-- Most carriers place the blame on user meddling on their device causing misprovisioning(s).
Reprovisioning refreshes the data on the UICC/SIM and APN settings.
It can also mean them changing the QCI settings on the UE and UPF at the core layer (meaning changing / presumably increasing the allowed speed of your service).
In simple terms, provisioning is the process of preparing and equipping a network to allow it to a provide service to its users. SIM Card provisioning is a process to activate said SIM and services before it is used by a customer.
Reprovisioning of a SIM is nothing but repeating the process from scratch.
In the event that you feel that it could be something else besides the SIM and/or IMEI, feel free to enlighten me.
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Click to collapse
oh my god! It's too profound. How should I solve it in the end? I don't understand this at all.
LinhBT said:
I'm wondering if he's trade-in a stolen device or not. Since due to TMO's policies ( As mentioned in other topic, I have KebabTMO ) the device will be network locked permanent. And as I did lots of research on this matter with 8T, the only solution is to ditch the modem and replace with another one, then force EDL flash Global fw to convert it to global.
Using tools ( even Qualcomm Tools or other pro tool specific made for OP devices or to work with deivce's modem are both useless in this case, I even used QXDM, QCAT, along with QPST )
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Click to collapse
How can I solve this problem? Replace the system?
aibie520 said:
oh my god! It's too profound. How should I solve it in the end? I don't understand this at all.
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Click to collapse
The general consensus it to perform a factory reset.
-- Take a deep breath, clear your mind and prepare to contact the network provider with explicit details.
-- You initially stated that you exchange phones with others.
-- You need to check to be certain that the ESN is cleared "for take-off".
A clear/clean ESN indicates that it is activated properly by the service provider. An unclear ESN refers to a phone that is either still activated, or lost/stolen.
ESNs might be “bad,” which means the carrier has blacklisted the phone at a moment's notice.
rodken said:
The general consensus it to perform a factory reset.
-- Take a deep breath, clear your mind and prepare to contact the network provider with explicit details.
-- You initially stated that you exchange phones with others.
-- You need to check to be certain that the ESN is cleared "for take-off".
A clear/clean ESN indicates that it is activated properly by the service provider. An unclear ESN refers to a phone that is either still activated, or lost/stolen.
ESNs might be “bad,” which means the carrier has blacklisted the phone at a moment's notice.
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Click to collapse
I can't contact the supplier, and I don't know what ESN is. I'm in China, I'm a Chinese user, and I don't have a T-Mobile account. It's just a mobile phone.
aibie520 said:
I can't contact the supplier, and I don't know what ESN is. I'm in China, I'm a Chinese user, and I don't have a T-Mobile account. It's just a mobile phone.
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Click to collapse
In this case you should have gotten a Chinese OnePlus 8. T - Mobile and other American carriers are picky with devices being used overseas, and there are often compatibility issues with doing so.
Often times your phone might not be able to connect to the cell towers in China because the cell bands may be different. This was the case for another Chinese user with the IN2019 (Verizon model) who couldn't connect at all. Your best bet would be to just get another phone or desperately try using the global or Chinese ROMs in the hopes of getting a connection.
Xryphon said:
In this case you should have gotten a Chinese OnePlus 8. T - Mobile and other American carriers are picky with devices being used overseas, and there are often compatibility issues with doing so.
Often times your phone might not be able to connect to the cell towers in China because the cell bands may be different. This was the case for another Chinese user with the IN2019 (Verizon model) who couldn't connect at all. Your best bet would be to just get another phone or desperately try using the global or Chinese ROMs in the hopes of getting a connection.
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Click to collapse
I am using Chinese color13.This is China ROM.The signal suddenly disappeared after several days of use