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Simple mobile 4G on gingerbread update!

Hi for all of the Simple Mobile users. I ran into a difficulties trying to get 4G internet on my new LG G2x with gingerbread update. Per Simple mobile website, to make MMS and internet work all you have to do is create a new APN for Simple Mobile in apn settings (http://www.mysimplemobile.com/Support-Center-Phone-Programming.aspx#LG), move the green button to new APN, hit save, reboot your phone and you good to go. However it says there also that you CANNOT modify original T-mobile APN that is already created in the phone.
Now here is the problem with gingerbread update. After you rebooted your phone you can go ahead and use internet but right when you got your first page the green screen coming up with t-mobile customer service info and it says there that there is no connection with your phone, please call the number provided below. You might have luck actually getting on the first page but after that - nothing. What happens is after you start using internet your phone stop reading information from newly created APN and automatically switching back to the original default T-mobile APN. And it doen't matter if you reboot the phone or not, it will still make an automatic switch.
Now after discussing this issue here on the board, with great help from jboxer we came to a solution. Jboxer said nobody done this before so I figured why not try it and it actually worked.
All you need to do is root the phone using these tools:
1. Install Clockwordmod with NVFlash.
http://forum.xda-developers.com/showthread.php?t=1056847
2. root it with this zip
http://forum.xda-developers.com/showthread.php?t=1255214
I am a noob in flashing/rooting the phones but it took me only 20 min. to do this procedure. Right after I root the phone I went to menu - settings - wireless & networks - mobile network settings - access point names - hit on T-mobile APN and now you got the opportunity to modify it! The rest - do exactly what the simple mobile website tells you to do.
Hope this helps!

korenpenza said:
Hi for all of the Simple Mobile users. I ran into a difficulties trying to get 4G internet on my new LG G2x with gingerbread update. Per Simple mobile website, to make MMS and internet work all you have to do is create a new APN for Simple Mobile in apn settings (will post the link later because they are updating their website right now), move the green button to new APN, hit save, reboot your phone and you good to go. However it says there also that you CANNOT modify original T-mobile APN that is already created in the phone.
Now here is the problem with gingerbread update. After you rebooted your phone you can go ahead and use internet but right when you got your first page the green screen coming up with t-mobile customer service info and it says there that there is no connection with your phone, please call the number provided below. You might have luck actually getting on the first page but after that - nothing. What happens is after you start using internet your phone stop reading information from newly created APN and automatically switching back to the original default T-mobile APN. And it doen't matter if you reboot the phone or not, it will still make an automatic switch.
Now after discussing this issue here on the board, with great help from jboxer we came to a solution. Jboxer said nobody done this before so I figured why not try it and it actually worked.
All you need to do is root the phone using these tools:
1. Install Clockwordmod with NVFlash.
http://forum.xda-developers.com/showthread.php?t=1056847
2. root it with this zip
http://forum.xda-developers.com/showthread.php?t=1255214
I am a noob in flashing/rooting the phones but it took me only 20 min. to do this procedure. Right after I root the phone I went to menu - settings - wireless & networks - mobile network settings - access point names - hit on T-mobile APN and now you got the opportunity to modify it! The rest - do exactly what the simple mobile website tells you to do.
Hope this helps!
Click to expand...
Click to collapse
That is not how I said to fix it. Rooting the phone doesn't allow you to modify the default settings. In fact, rooting is not even necessary to do my fix. What I said to do is to flash my file that sets a new default APN for Simple Mobile. Here is the thread below. Sucks to be miquoted so badly.
http://forum.xda-developers.com/showthread.php?t=1271508

jboxer said:
That is not how I said to fix it. Rooting the phone doesn't allow you to modify the default settings.
Click to expand...
Click to collapse
Well, rooting allowed me to modify default settings.
korenpenza said:
Reboot or not reboot, it is still switching to TMO apn. So as far as I understood I have to root the phone first, then edit "apns-conf" file?
Click to expand...
Click to collapse
jboxer said:
Yup. And no guarantee it will work but someone needs to try it so we know.
Click to expand...
Click to collapse
All I did is rooted the phone like you explained here http://forum.xda-developers.com/showthread.php?t=1255214
and I was able to modify original T-mobile APN.

jboxer said:
That is not how I said to fix it. Rooting the phone doesn't allow you to modify the default settings. In fact, rooting is not even necessary to do my fix. What I said to do is to flash my file that sets a new default APN for Simple Mobile. Here is the thread below. Sucks to be miquoted so badly.
http://forum.xda-developers.com/showthread.php?t=1271508
Click to expand...
Click to collapse
lol. Well props for making a flashable fix (best method IMO)
I guess once rooted it allows the settings to stick? Others have had luck with APN managers from the market which backup and write custom APN entries which works.
So the problem is that the APN keeps defaulting to Tmobile and the solution is to somehow edit and Save the default Tmobile APN setting with information that pertains to Simple Mobile so that it sticks.
Glad its fixed either way.

another way to fix it is by going into lg hidden menu
dial 1809#*999#>KR Setting>Set KR Settings
this removes all of the apns including tmo's then u just put in the simple apn nd ur good to go

korenpenza said:
All I did is rooted the phone like you explained here http://forum.xda-developers.com/showthread.php?t=1255214
and I was able to modify original T-mobile APN.
Click to expand...
Click to collapse
Rooting would not make a difference here. All rooting means is that apps can request superuser (root) permissions to make changes to the system, and the app that sets the apn never requests root access so rooting the phone would not do anything here. Simple Mobile users were always able to make a new apn (default apns can never be modified). The problem is when they reboot it goes back to TMO's settings. Have you tried rebooting yet. My fix sets a new default apn for Simple Mobile which can be set and stick throughout rebooting, etc.
Also, as stated in my other thread, my fix DOES NOT require root. It only requires that Clockworkmod Recovery be installed.

Dude,
I have been using SIMPLE MOBILE forever and not had the problem you are speaking of. Just follow the instructions on the SM website. Set up the new apn. When you reboot hold the volume button up while rebooting and you should be set. Could it be you aren't setting up the apn properly?
And on some of the ROMS you can edit the T-Mobile apn.
Sent from my intergalactic space modulator using XDA-app

Speaking of Simple Mobile, do they allow using the Wifi hotspot feature on the G2x? I saw in the company's FAQ that tethering was not allowed on SM phones, but wasn't sure if that covered hotspotting as well.

I have a question for you guys, I just got an unlocked G2x to use on simple mobile that I haven't activated, On t-mobiles site it says it supports for 4G, but on simple mobiles site it says it's only approved for 3g data, my question is do I need to get the 3g $40 plan or $60 4g plan to get the most out of the data on this phone?

Do both plans give you the same volume of data (i.e., 500Mb, 1Gb, etc)? If so, go with the cheaper plan. The systems hardly ever let you get the full speed anyway. In Thailand I only get between 2 to 3Mbps usually and it is plenty fast.

jboxer said:
Do both plans give you the same volume of data (i.e., 500Mb, 1Gb, etc)? If so, go with the cheaper plan. The systems hardly ever let you get the full speed anyway. In Thailand I only get between 2 to 3Mbps usually and it is plenty fast.
Click to expand...
Click to collapse
Sadly simple mobile 3g is really on edge speed and the 4g is on 3g speed.
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sent from my calculator with android

jose makalolot said:
Sadly simple mobile 3g is really on edge speed and the 4g is on 3g speed.
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sent from my calculator with android
Click to expand...
Click to collapse
I have ran into this problem. I recently obtained a G2X and SIMPLE Mobile SIM and account. I paid the $40 for the "3G" connection. However it seems that the speed is throttled to around 118kbps down. So I did some testing and found that forcing the phone to use "2G Only" allowed up to around 160kbps down. This is just insane! I have read where some people on SIMPLE Mobile 3G have been able to get around 1500-3000kbps but have no idea how they manage that. My Optimus V on Virgin Mobile's 3G averages around 600-1000kbps down. That is usable. The SIMPLE Mobile one is just crap. I hate to have to pay more for less, unless you count the unlimited talk in that, but I may be sticking with VM for a bit longer. Any ideas how I can get the speed up on the SM one without paying the $60/month?

kameleon25 said:
I have ran into this problem. I recently obtained a G2X and SIMPLE Mobile SIM and account. I paid the $40 for the "3G" connection. However it seems that the speed is throttled to around 118kbps down. So I did some testing and found that forcing the phone to use "2G Only" allowed up to around 160kbps down. This is just insane! I have read where some people on SIMPLE Mobile 3G have been able to get around 1500-3000kbps but have no idea how they manage that. My Optimus V on Virgin Mobile's 3G averages around 600-1000kbps down. That is usable. The SIMPLE Mobile one is just crap. I hate to have to pay more for less, unless you count the unlimited talk in that, but I may be sticking with VM for a bit longer. Any ideas how I can get the speed up on the SM one without paying the $60/month?
Click to expand...
Click to collapse
Are you able to send mms or sms on 3g on $40. I cant on mine. I need to use 2g only to do that.
Sent from my MB860 using Tapatalk

jose makalolot said:
Are you able to send mms or sms on 3g on $40. I cant on mine. I need to use 2g only to do that.
Sent from my MB860 using Tapatalk
Click to expand...
Click to collapse
I mainly use google voice for my text and such since I ported my number to GV and all. But I just tried sending a picture message to my other phone's actual number from my G2X without google voice and it sent, just took forever. As for sms though it has always worked. This is with my phone showing "4G".

kameleon25 said:
I mainly use google voice for my text and such since I ported my number to GV and all. But I just tried sending a picture message to my other phone's actual number from my G2X without google voice and it sent, just took forever. As for sms though it has always worked. This is with my phone showing "4G".
Click to expand...
Click to collapse
Mine doesn't work since Sunday on 4g icon. It will only work on 2g only. SM said faulty sim. Darn, I need to get a new sim. The only problem is, what if the new is still the same.
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sent from my calculator with android

jose makalolot said:
Mine doesn't work since Sunday on 4g icon. It will only work on 2g only. SM said faulty sim. Darn, I need to get a new sim. The only problem is, what if the new is still the same.
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sent from my calculator with android
Click to expand...
Click to collapse
Be sure not to pay the $12.99 for the SIM directly from SM. Go on amazon and buy one for about $1.99 or if you are a Prime member get the one I did for $2.49 w/ free 2-day shipping. Won't hurt to try with it being that cheap.

jose makalolot said:
Sadly simple mobile 3g is really on edge speed and the 4g is on 3g speed.
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sent from my calculator with android
Click to expand...
Click to collapse
odd.. I just switched to the G2X and bought a new Sim card with 4g.
before I had an LG optimus T with the 3g and always got 3g speeds around 2000kbps
On the 4g with my G2X I get anywhere from 2000 to 5000kbps. The really odd thing is its either 4g or 2g. I'll be sitting at work and it will drop from 4g to 2g.. making me think "wtf happened to 3g"?
Another thing I noticed is the hand off between edge and 3g was much smoother. With the G2x It will often completely drop all connections, data and voice, then pop back up with the different speed.

Jmodix said:
odd.. I just switched to the G2X and bought a new Sim card with 4g.
before I had an LG optimus T with the 3g and always got 3g speeds around 2000kbps
On the 4g with my G2X I get anywhere from 2000 to 5000kbps. The really odd thing is its either 4g or 2g. I'll be sitting at work and it will drop from 4g to 2g.. making me think "wtf happened to 3g"?
Another thing I noticed is the hand off between edge and 3g was much smoother. With the G2x It will often completely drop all connections, data and voice, then pop back up with the different speed.
Click to expand...
Click to collapse
Yeah SM is just stupid slow on "3G". I actually got faster speeds when I forced 2G only network. My wife's Samsung Gravity Smart also has the same speeds as my G2x. I am thinking of switching to the $30/month 5GB of 4G data w/ 100 minutes that T-Mobile offers just to try it out. I can use my GrooveIP to make/receive calls if need be.

this helps alot cuz im about to get simple mobile...thanks!

seangeezy12 said:
this helps alot cuz im about to get simple mobile...thanks!
Click to expand...
Click to collapse
Just be ready for super slow speeds if you don't pay for their "4G" package. I ran some back to back tests yesterday with my SIMPLE Mobile sim and a T-Mobile sim in my G2x.
SM "4G" 118kbps down/ 132kbps up
SM "2G" 159kbps down/ 131kbps up
TM "4G" #1 885kbps down/ 348kbps up
TM "2G" 207kbps down/ 133kbps up
TM "4G" #2 1505kbps down/ 524kbps up
all ran back to back. So even T-Mobile 2G is faster than SM 3G. lol

Re-rooted Samsung Admire

I just re-rooted my phone again after messing up my previous Admire. I can believe how fast this phone gets once it's rooted. If you still haven't done it, don't wait because your phone suffers every second it spends with metro's bloatware. Please share your experiences after rooting your Samsung Admire.
Sent from my SCH-R720 Rooted using xda premium

My Admire has been working great. Like you said when you remove the bloatware sure makes a difference. Sorry your first one didnt work better for you. Enjoy your phone maybe some day a rom will come out for it.

KB0SDQ said:
My Admire has been working great. Like you said when you remove the bloatware sure makes a difference. Sorry your first one didnt work better for you. Enjoy your phone maybe some day a rom will come out for it.
Click to expand...
Click to collapse
Thanks my friend hopefully this one won't die on me like the last one. Can you suggest any good app to keep my system running top notch?
Sent from my SCH-R720 Rooted using xda premium

Living in Metro Dallas ... Got root easily from this guide:
http://androidforums.com/admire-all...e-sch-r720-windows-mac-linux-9-12-2011-a.html
Phone is still new so i'm still messing around with pm list packages ... disable etc (after looking at the room on the phone, it may be best to delete these all together actually).
Discovered a weird bug with the onscreen keyboard. No matter which version of terminal you use when you type an "i" it turns into an "I" and results in botching commands
ie. pm list packages = pm lIst packages and indicates an invalid command (weird!) - if you swype the word "list" however instead of manually typing the word will take.
In Dallas there is some 3g here for metro - I have to say I am extremely disappointed in the data speeds on Metros network.
I've been trying desperately to force 3G on this phone and have updated to PRL 3024 per this guide: http://prepaidandroids.net/topic/2763-update-to-prl-3022/ PRL: http://androidforums.com/samsung-admire/430581-prl-3024-a.html
After updating to PRL 3024 (Metro had me on 3019 after just purchasing my phone last week and then provisioning it via *228 as specified to do so on the box WTF?) I'm seeing some spotty 3G (yay! 200k speeds ) but most of the time the signal fades during a DL or SpeedTest and rolls back to 1X (Not always)
This 1X **** is driving me crazy ... Today I started changing System Settings via QPST to determine if I could perform an action that would cause the phone to stick to 3G only.
On any other phone this would be as easy as dialing *#*#4636#*#* but on these phones that feature is apparently disabled... (all metro phones i imagine?)
Halp?
Changing preferred mode to automatic, PCS Only, has no affect.
Setting the band mode to A or B results in no signal at all
Changing roam preference to affiliate or home only does not appear to trigger 3G
During testing the 3G icon did flash briefly telling me there should be a connection where I'm at ...
Installing flash player atm ... http://www.youtube.com/watch?v=QN7ODEFCdtM w00t!
EDIT: Gonna try some of these: http://forum.xda-developers.com/showthread.php?t=1227269&highlight=TWEAKS and see what we get ...

Q: I don't have data anymore

So I recently bought the girlfriend a Samsung Galaxy S 4g. Definitely a bit different than the Evo in terms of the overall process. It didn't help that I started out in the Vibrant forums somehow...
Anyway. As it stands right now I have her phone all rooted and it has CWM and I'm using the Valhalla ROM. The issue is that she doesn't have data.... and when I go into wireless networks and check out the mobile networks and such, I can never actually see T-Mobile. If I search I can see AT&T, which I connect to and I start roaming. If I do this I still don't actually have internet. I can't use the market, or the web browser or facebook or anything that requires data. The browser will sometimes redirect me to some web2go website, otherwise it just times out or says it can't connect to the server.
So does anybody know what's going on? Please let me know if you need any more details.
I've never had trouble like this between my Evo, or my Epic 4g Touch or any friends phones. I've also tried going back to 100% stock unrooted GB and I still have the exact same problem. The ROM doesn't seem to matter, neither does being rooted.

Since you are running Valhalla bring down the notification bar and make sure you have the data toggle on.

Yep, it's definitely toggled to on. I even cycle airplane mode and make sure it's on afterwards.

Only other thing I would suggest is a factory reset. The phone should be picking up the T-mobile network without any problems. But if rooted or not and on stock vs custom rom the issue remains you may just have to set it back to stock and send it in for replacement.
And I know this is a silly question but make sure you call T-mobile and verify that this line has data plan. It has happened in the past when I added a line that it wasn't provisioned correctly and out of the blue the data stopped working. The service was automatically removed due to a reps mistake.

Check your APN settings. Should be T-Mobile's, if not then that's what causing the issue. Just look up for those on google.
Sent from my SGS4G using xda forum app

My APN settings are correct. I've now tried several other APN settings though, and this hasn't helped.
I know this phone is on a data plan. It's on the $50.00 a month prepaid. It did work when we got it, and after it was rooted. I just noticed recently that it stopped working, and I'm not sure at what point it happened, and if it has anything to do with what I've done.
I called tmobile and they said they couldn't see any network related issues going on. Just my phone not connecting, so it was made a ticket for the engineers I guess haha. They are supposed to work on it, and they usually will either fix it and never contact you, or call you if they need you to do something.

Bump.
I've been in really good service areas with full bars T-Mobile and I still don't have internet. So I really don't know what's up. The "T-Mobile engineers" haven't called me back or fixed anything yet.
I'm about to bring myself back to stock and bring it in to a store.

Bring it back to stock & maybe put it in recovery mode & wipe caches & do factory reset again. See if that helps before returning it.
Sent from my SGH-T959V using XDA App

You might try reflashing the ROM or maybe just flash a different modem. I had issues like that once when i was on black ice. If you had data before, there probably isn't anything wrong with your phone.
Sent from my SGH-T959V using XDA App

Having the same Data problem
I had an unlocked ATT BB Curve on T-Mobile and the data was working (although very slow...)
I decided to try out a "Vibrant" hoping to be able to install ICS via Cyanablahblah.
Searching on Ebay I bought one only it turned out to be the 4G (it didn't realize there was a difference.)
Since then I can't get DATA on the 4G except in WiFi.
On the network it goes to the page: u.web2go.com and says my data plan does not work on this device.
Has anybody had any success with this problem ?
Could it be a 4G issue ? Before DATA came from Edge.

Have you checked what your APN settings should be with the magics of Google?

Theraze said:
Have you checked what your APN settings should be with the magics of Google?
Click to expand...
Click to collapse
I have, I've tried 3 different versions with no joy.
Update:
As per T-Mobile Tech,
Apparently Blackberry Data service does not work on non BB phones.
Needs Add on Data plan

bogiewan said:
I have, I've tried 3 different versions with no joy.
Click to expand...
Click to collapse
tmob probably caught on that you're using a "4G" phone and will try to force you to upgrade your plan.

FBis251 said:
tmob probably caught on that you're using a "4G" phone and will try to force you to upgrade your plan.
Click to expand...
Click to collapse
Is there any way to fool it with a 3G modem flash or something ?
I think I screwed up when I bought the phone not realizing there were 2 variants of the "Vibrant."
I wonder if I would have this problem with the earlier (non "V") 3g phone.

Probably. If it were just the 3G/4G causing the problem, you can force the SGS4G to only use 2G networks in the data settings... but if it's anything like the old Verizon bits with tethering and other data, they check for specific data strings that are harder to fake... I mean, set.

bogiewan said:
Is there any way to fool it with a 3G modem flash or something ?
Click to expand...
Click to collapse
They use your IMEI to tell what phone it is.
http://www.gsma.com/technicalprojects/fraud-security/imei-database

the OP was in 2011, so I'm pretty sure he already got it taken care of

mike-y said:
the OP was in 2011, so I'm pretty sure he already got it taken care of
Click to expand...
Click to collapse
... so I should have started a new thread instead of searching ?

bogiewan said:
... so I should have started a new thread instead of searching ?
Click to expand...
Click to collapse
No you shouldn't have. :good:

[Q] Unlocking Question

I have requested my unlock code from T-Mobile. I have my Straight Talk SIM card ready to go. Now, my question is:
Does having Root and/or custom roms affect the process of unlocking a device?
I just want to make sure ahead of time so I can make the process as smooth as possible. Thanks in advance!

I believe you just need to be on a stock ROM, then it'll always be "activated" no matter what you flash.

So root makes no difference?

Doesn't make a difference.
Sent from my LG-P999 using XDA

OK thanks!!!

You must unlock in stock, but once you do, you are free to root away.
Sent from my LG-P999 using Tapatalk 2

Being rooted and running a custom rom doesn't matter... I have unlocked two of mine one running Weapons and the other running Hellfire Sandwich 1.7 (dirty) and they both unlocked fine
Sent from my $40 Sensation XE with Beats Audio

Well I ended up having to flash a stock rom to get it to work, but my phone is unlocked. which led me to a weird question:
I put my friends Straight Talk sim card in my phone to be sure it was working, and the phone had service and data on it right away. I was able to make phone calls, surf the web, send texts (I didn't test out the MMS). I thought adjust the APN settings was a must for all that stuff to work...? I didn't change a thing. But then it got me curious as to what my APN settings actually were. But when I went to click on the APN button under settings>mobile networks, I get the horrible "Unfortunately the process com.android.phone has stopped" error. I haven't seen that since I stopped using Wifi calling. Now it looks like I can't change my APN if the need arises. Anyone know of a loop hole to this?

Does 3g/hspa work for you sorry to change subject but can't find info on this subject I'm thinking of moving to this phone from the thrill 4G but in afraid my straight talk Sim won't connect 3g since it's TMobile phone and straight talk is Att towers to best of my knowledge
Sent from my LG-P920 using XDA

Straight talk runs on a variety of frequencies from its parent companies depending on what device you have. AT&T devices are equipped for Straight Talk's 3G network because they operate on the frequencies. T-Mobile devices operate slightly differently. However, adjusting the APN settings correctly to transmit date via AT&T's service is supposed to to more or less resolve the issue. Unfortunately I can't seem to do that. It may be something to do with the rom I'm using, but I'm not sure. I'll have to text it out.

that would be awesome I'll keep checking back to see your results
Sent from my LG-P920 using XDA

If straight Talk uses Att's 3g frequencies then you won have 3g on this phone. This phone does not have the proper radio frequency for it.
Edit: look at my answer in your other post.
Sent from my LG-P999 using XDA

[Completed] Samsung GT I9305 U.S.A. Modem - Does It Exist?

GT I9305 data speed in U.S.A. T-Mobile is 0.12 Mbps (It crawls).
In Northern Europe recently, using a data only Sim on T-Mobile, it worked at 3.00 Mbps, not really fast, but usable.
Wi Fi speed at home is 15 Mbps.
Everything else runs great.
No amount of tinkering with settings and APNs changes anything.
Changed firmware using Odin from 4.1.2 to 4.3 twice, I9305XXUEMKC and now I9305XXUEML5.
Root or no Root makes no difference.
These firmwares I beleive do not change the modem which does not seem to adjust to U.S. standard.
Can this phone run at 3g or 4g in U.S?
Is there a modem that can load in Odin, which I know how to use, that will give desired result?
If so, what and where is it?
If not Odin loadable, kindly use plain step by step English.
If no U.S. modem exists, will trying other European modems make any difference and/or brick the phone?
Thanks for any help or direction.

The first thing I would highly suggest is, DO NOT TO FLASH A MODEM THAT IS NOT FOR YOUR DEVICE. That is a very good way to end up with an expensive paperweight. Have you tried updating PRL / Profile ? Have you contacted your carrier to have them reset your Data on their end ? There is a thread HERE with Modems for your device. You may also want to ask about data speeds HERE.

prboy1969 said:
The first thing I would highly suggest is, DO NOT TO FLASH A MODEM THAT IS NOT FOR YOUR DEVICE. That is a very good way to end up with an expensive paperweight. Have you tried updating PRL / Profile ? Have you contacted your carrier to have them reset your Data on their end ? There is a thread HERE with Modems for your device. You may also want to ask about data speeds HERE.
Click to expand...
Click to collapse
Thank you for your help.
T-Mobile, the carrier, did tell me once they would make some kind of adjustment at their end, but no difference.
What exactly is a profile and how is it tuned for this situation?
Will look at the other two threads.

I'm not sure about the GT I9305, but it should be the same. Look in Menu - Settings - More - System Update. You should see Update PRL / Update Profile. I would also say to check out THIS post. Plus the thread HERE has some good general information.
But as I stated before, I would call the carrier first. Have them reset your Data on their end.

prboy1969 said:
I'm not sure about the GT I9305, but it should be the same. Look in Menu - Settings - More - System Update. You should see Update PRL / Update Profile. I would also say to check out THIS post. Plus the thread HERE has some good general information.
But as I stated before, I would call the carrier first. Have them reset your Data on their end.
Click to expand...
Click to collapse
Will begin by contacting T-Mobile and asking for Data reset.
Update PRL/PROFILE not found.
You opened a number of other doors. It will take awhile to thoroughly check them one by one.
Will post final outcome here.
Thanks again.

Just a bit more info. A fellow member of the Assist Team has pointed something out to me regarding your issue. It was mentioned, that it is very important on T-Mobile to make sure that your APN is set to " FAST " . Otherwise your data will be slow, or none at all. A quick search came up with THIS THREAD. Also be sure to write down your current APN settings where you can recall them. Or better yet take a couple of screenshots of your current APN's , and save them to the PC / Laptop. Or anywhere other than the device, as a CYA measure. Remember always read, read, read, and re-read all information before proceeding.

prboy1969 said:
Just a bit more info. A fellow member of the Assist Team has pointed something out to me regarding your issue. It was mentioned, that it is very important on T-Mobile to make sure that your APN is set to " FAST " . Otherwise your data will be slow, or none at all. A quick search came up with THIS THREAD. Also be sure to write down your current APN settings where you can recall them. Or better yet take a couple of screenshots of your current APN's , and save them to the PC / Laptop. Or anywhere other than the device, as a CYA measure. Remember always read, read, read, and re-read all information before proceeding.
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Did the following today:
Contacted T- Mobile and requested a Reset from their end AND inquire if a U.S. specific Modem file exists for the I9305.
Downloaded from two of the sites you referred me to, some 20 Modem files.
Using Odin, installed five of them.
They all worked about the same with no real difference or improvement.
Restored the Modem file that came the OS firmware.
Checked the APN site you mentioned and tried all sorts of various combinations including adding a dash to tmobile and using FAST.
Nothing made a difference.
Am now back on APN default setting, the phone will remain on for three days that T-Mobile said it needs to do its configuring.
It seems to me that the modems for this phone are all based on non U.S. standards and even if a U.S. modem exists or can be built and used, it might not make a difference if the issue is hardware based, which is something that cannot be readily changed, if at all.
What is hard to fathom is that the phone indeed, does work in 2G, but so unbelievably slowly, have to suppose, some other factor, that we have not addressed, is causing a bottleneck. Why would Samsung make a phone and T-Mobile
offer a network that they knew would only operate at a 2G speed of 0.12 mbps? That makes no sense.
Will await the Reset outcome, also anticipate an upcoming Android firmware update to 4.4 and will keep looking for an answer.
If all else fails, will then consider another carrier or another phone, but not giving up yet.
Your continued interest is really appreciated!

Robbbbert I would at this point suggest asking on THIS thread. As we do not want to bypass the Purpose of the XDA Assist Forum. One last thing to check is that your Network Mode. Menu - Settings - More networks - Mobile networks - Network mode. Make sure it's set to LTE.