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my friend tom got his galaxy s like two months ago. he has a even more plus plan with unlimited everything on tmobile and he used that in a iphone 3g for a year with no problems and he could roam with no issues on att.
with his new vibrant its not working! it takes forever to try to connect then gives a error. the sim should be good since it roams in two other unlocked phones..
for the note, his phone IS unlocked... that was the first thing we thought of..
the error is: unable to select network.. your sim card is not allowed to connect to this network
this phone is a quadband phone so it should work.. we have put a att legit iphone sim in it and it works great.. what gives? why can't he roam on this new phone when other phones do? running bionix rom.. have tried updates, wondering if anyone has any opinions or info
we've already tried changing network settings with *#0011#, gone into service mode *#*#197328640#*#* with no luck
edit: we've tried not allowing the phone to connect to our local att 3G band (1900) and use all other bands again with no luck. the phone connects to canada's rogers network tho.. weird..
anyone check this out yet?? anyone got it workin? any reports would be killer ...
we have tried more settings through service mode still with no luck. when we specify certain bands and leaving the att 3G local band unchecked, it will not hop on T-mobile with the setting! Crazy! not sure if it's the rom, radio version or kernel but we will keep tweaking and posting results.. if anyone is having this issue or has concerns any posts or signs of life would be cool lol
Same issue
Unfortunately, I don't have a solution, but I've been working on this same issue since september. I originally contacted tmo about the problem to see if they somehow hadn't provisioned my phone/account for roaming. Needless to say they were not much help. They suggested I exchange the phone for a new one, which I did, and I still have the same problem.
I'm in a rural area of california where tmo has roaming on att towers. My girl has tmo service with a different samsung phone and she can roam on att just fine. She can send/receive calls and text. I even put my sim in her phone, and it works, so I've pretty much narrowed the problem down to an issue with the vibrant itself.
My phone is not unlocked, so we've ruled that out. I'm running bionix fusion with ji2 modem now, but I've had the issue with the stock phone before ji6, and after ji6 ota. I've tried messing around with the service menu the same as you, and I haven't got anywhere either.
I have been able to get the phone to at least lock on to att by adding the apn internet2.voicestream.com, and it will get past the "not registered on network" message. Unfortunately, it won't complete a call or send a message, it just times out after about 15 seconds and drops back to the previous menu (depending on whether I tried to dial out of contacts, the call log, or the dialer). But it does not give me an error message, it behaves as if the call connected and immediately hung up.
I had given up on it for the past couple weeks, but I have time now to try and work it again. Let me know if you've gotten anywhere, and I'll do the same.
The fix is: when you're in an att roam area, set your phone to gsm 850 only via the service menu. If your phone doesn't auto lock on the att network, search for available networks and choose att. After that you should be able to send and receive calls and texts.
after yet some more messing around, still no luck. it's clearly a thing with tmobile not allowing roaming..... because i read many threads off the gooooogle that say tmobile is pretty much going away and any "contractless" plans don't have roaming so they don't lose money....
dickheads. at least he's grandfathered in with a good unlimited everything plan tho..
even if all this said, if anyone finds any info out post!
the other day i was out of tmobiles network coverage and on att voice and edge not 3g. i live in texas
this is with a stock vibrant jI6
tried the app RoamControl with no luck. it uses different tmobile bands when in "roam only" mode. anyone have any luck yet?
I'm a noob here, but other places i'm not. I have read VERY many posts and the gist of owning a thunderbolt is that it only work(ed) on CDMA VZ so it is not compatible with GSM although it has a SIM card because its is/was locked to VZ only frequencies.
Just to make sure, I called VZ to attempt to get an unlock code saying I was going on a trip overseas and needed my phone to work. I was told that if I upgraded via the OTA to ICS, my device would then be compatible with GSM and I could simply use any SIM card in my phone and get it to work.
What I am trying to do is move over to straightalk away from VZ.
Instead of unrooting, I flashed the radios and ROM available on this site and ICS is up and running.
So has anyone tried straight talk yet on ICS?
That doesn't sound right to me but I would be interested in finding out whether or not it works. From what I understood about the antenna in this phone is that it is locked in on the 700mhz band at a hardware level. Also there are no settings to change to GSM in the network settings.
Sent from my ADR6400L using Tapatalk 2
Hmmm. Don't know why tech support would lie though -- especially when I waited online for about 30 minutes throughout the conversation. I've been a customer since 1997. He even said, after I switched to ICS, simply insert new SIM and I'm ready to go.
disconnecktie said:
That doesn't sound right to me but I would be interested in finding out whether or not it works. From what I understood about the antenna in this phone is that it is locked in on the 700mhz band at a hardware level. Also there are no settings to change to GSM in the network settings.
Sent from my ADR6400L using Tapatalk 2
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Click to collapse
They may not be lying but rather don't know what they are talking about lol. They are wrong all the time. Just because we have a sim doesn't mean that putting a gsm sim in makes it possible to use on other networks. Give it a try maybe they finally did make it possible. Like I said I thought at a hardware level this phone was permitted from using gsm bands.
Sent from my ADR6400L using Tapatalk 2
RE: Thunderbolt to straight talk
Granted, they may be wrong. But, all the many hours of reading I have done, says that CDMA only phones don't have SIM cards and my TB does. And per another posts GSM in the USA operates on more frequencies than abroad. Why would HTC create a phone with a SIM card if there was no reason because it was only CDMA?
Regardless, I purchased a ST SIM and an unlimited plan to try out. I'll post back after I see if I wasted my $$$ or not.
The LTE frequency Verizon uses is actually a GSM which is one reason. Verizon owns the upper c block of the 700mhz spectrum. Also, because Verizon is originally a CDMA carrier they had to use another antenna in all LTE phones in order for them to function. The LTE antenna uses data only. It is not equipped to make phone calls unless a phone call is already in progress in which case the phone is routed through the LTE antenna and is then made over the data connection much like VoIP.
Sent from my ADR6400L using Tapatalk 2
disconnecktie is right, the Thunderbolt can not connect to GSM services. The sim card is not a GSM sim card, its is a 4g LTE sim card. Just because its called a sim and looks similar, does not mean they are the same. The guy you spoke with on the phone probably knew nothing about the Thunderbolt and just assumed that because it has a sim card it would connect to GSM networks.
understandably.
Milimbar said:
disconnecktie is right, the Thunderbolt can not connect to GSM services. The sim card is not a GSM sim card, its is a 4g LTE sim card. Just because its called a sim and looks similar, does not mean they are the same. The guy you spoke with on the phone probably knew nothing about the Thunderbolt and just assumed that because it has a sim card it would connect to GSM networks.
Click to expand...
Click to collapse
"The LTE antenna uses data only. It is not equipped to make phone calls unless a phone call is already in progress in which case the phone is routed through the LTE antenna and is then made over the data connection much like VoIP."
So theoretically, if there is an LTE only antenna....how does a call get routed regularly when LTE networks (such as 1G and 3G) occur when LTE network isn't available to pass the information over the data connection? More than one antenna?
I'm not expecting this card to work in and of itself. I'm going to swap out another GSM to see if after ICS upgrade, it is actually opened as promised. Now if it doesn't have the requisite antenna, that's understandable, but in that case, why theoretically couldn't I just get a GSM antenna and swap it out for the CDMA one? Can't be any worse than replacing a wireless card in a laptop?
Based upon the "answer" given to me by VZ tech support, I have to wonder if there really is a different antenna or simply the "sim" card installed locks it into the frequency -- and the OS lock(ed) into the sim card previously. A SIm card is essentially what allows you to communicate with a carrier afterall.
Definitely interested if this works, thanks for attempting this
Sent from my ADR6400L using xda premium
All the LTE sim does is authenticate your phone on the network. That is the reason *228 is no longer needed.
Sent from my ADR6400L using Tapatalk 2
The thunderbolt does not support GSM. It has 3 radios, two 3g cdma which enables svdo or simultaneously voice and data over 3g. FYI some new 4g phones won't do this. The LTE is data only and no phone calls are placed over LTE on any phone for vzw. VZW is not setup for voip yet and that won't start until at least 2014. The thunderbolt is not global ready even with ics. There is no apn info to edit. This all has been discussed many times over the last two years.
Sent from my A100 using Tapatalk 2
Just to clarify I wasn't saying the thunderbolt uses VoIP but that svdo is similar is all.
Sent from my ADR6400L using Tapatalk 2
disconnecktie said:
Just to clarify I wasn't saying the thunderbolt uses VoIP but that svdo is similar is all.
Sent from my ADR6400L using Tapatalk 2
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Click to collapse
I'm no cell tech and I get what you were trying to say. I apologize the last part of my post was a little rude. I don’t think voip and svdo are even close, I admit I could be wrong. Voip uses a data connection to place calls while svdo uses the cellular connection for calls and data. If you place the phone into airplane mode, connect to wifi you would not be able to place a call. If you had voip you'd be able to place a call. I know many carriers offer some sort of 3g to network extender that creates a similar type of connection.
Sent from my SCH-I605 using Tapatalk 2
Svdo also makes it so that calls can be placed over 4g when it is present which is like VoIP. Either way I know it isn't exactly the same but was merely using VoIP for a comparison.
Sent from my ADR6400L using Tapatalk 2
disconnecktie said:
Svdo also makes it so that calls can be placed over 4g when it is present which is like VoIP. Either way I know it isn't exactly the same but was merely using VoIP for a comparison.
Sent from my ADR6400L using Tapatalk 2
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Click to collapse
In my original post above I incorrectly used VoIP when I should have used VoLTE, I knew what i wanted to say, but used the wrong terms which can lead to confusion and this is all to the best of my understanding
The Thunderbolt as with all 3G cell phones make phones calls over 1x voice network while data is handled by 3G network. The thunderbolt does not make any phone calls over 3G or LTE, it has multiple radios which allow SVDO, a 1x for voice calls, a 3G radio, and a LTE radio. Calls are placed over 1x and data is handled by 3G or LTE whichever is available.
The link below has a good discussion and more clarification on the Thunderbolt when it was first released.
http://androidforums.com/htc-thunde...ort-voice-over-lte-when-verizon-launches.html
revisited
dms76 said:
The thunderbolt does not support GSM. It has 3 radios, two 3g cdma which enables svdo or simultaneously voice and data over 3g. FYI some new 4g phones won't do this. The LTE is data only and no phone calls are placed over LTE on any phone for vzw. VZW is not setup for voip yet and that won't start until at least 2014. The thunderbolt is not global ready even with ics. There is no apn info to edit. This all has been discussed many times over the last two years.
Sent from my A100 using Tapatalk 2
Click to expand...
Click to collapse
I realize that it has been "talked" about. But based upon conversations with VZ support perhaps it was time to rehash it based upon what I was told.
As far as the APN to edit -- after ICS update (non over the air -- the one provided here). See screenshot. There is even a folder created on the SD called APN Backup restore.
My phone is rooted using revolutionary and running the ICS deodexed, etc. found on xda-developers.
Based upon what I was told by VZ tech support, I purchased a ST test SIM with unlimited service. I installed it today and get SIM card is from an unknown source. I googled that and it appears to be locked. I thought I was unlocked and rooted using revolutionary. But now I question that. So am I truly unlocked like I thought I was? I then tried getting the unlock code using fastboot as per instructions on HTC's development site using oem get_identifier_token waiting for device, and I get stuck at "waiting for device" with no information ever coming up. The only way I appear to be able to communicate w device using ADB is by letting the phone boot then connecting it via usb using debugging mode, and always awake, then it appears as a device, but that's where I get that waiting for device message.
Meanwhile, with the ST card in it's downloading email. I just cannot send.
wrkrbee said:
I realize that it has been "talked" about. But based upon conversations with VZ support perhaps it was time to rehash it based upon what I was told.
As far as the APN to edit -- after ICS update (non over the air -- the one provided here). See screenshot. There is even a folder created on the SD called APN Backup restore.
My phone is rooted using revolutionary and running the ICS deodexed, etc. found on xda-developers.
Based upon what I was told by VZ tech support, I purchased a ST test SIM with unlimited service. I installed it today and get SIM card is from an unknown source. I googled that and it appears to be locked. I thought I was unlocked and rooted using revolutionary. But now I question that. So am I truly unlocked like I thought I was? I then tried getting the unlock code using fastboot as per instructions on HTC's development site using oem get_identifier_token waiting for device, and I get stuck at "waiting for device" with no information ever coming up. The only way I appear to be able to communicate w device using ADB is by letting the phone boot then connecting it via usb using debugging mode, and always awake, then it appears as a device, but that's where I get that waiting for device message.
Meanwhile, with the ST card in it's downloading email. I just cannot send.
Click to expand...
Click to collapse
Your phone is S-off, and rooted, unlocked is totally different. Unlocked means that verizon has allowed that phone to be used on other networks and carriers. You should really do some research, you will find that the thunderbolt will somewhat work on straight talk for a little while, then they will kick you off the network. Just google it instead of questioning everything people say here as they are just trying to help you and you seem to want to do nothing but argue anything that is said.
Milimbar said:
Your phone is S-off, and rooted, unlocked is totally different. Unlocked means that verizon has allowed that phone to be used on other networks and carriers. You should really do some research, you will find that the thunderbolt will somewhat work on straight talk for a little while, then they will kick you off the network. Just google it instead of questioning everything people say here as they are just trying to help you and you seem to want to do nothing but argue anything that is said.
Click to expand...
Click to collapse
First off, I'm not trying to "argue" with anyone. If these forums are not to ask questions, then what are they for? With that said, as I previously stated, I have spent HOURS which have amounted to DAYS reading not only the forums here and elsewhere and the information conflicts -- and I may have updated information who the heck knows. You never know when there is false information out there floating around and when it becomes outdated -- and the only way to update that information is by sharing upon these types of forums, I would think. You take your car to an automechanic and he tells you the entire transmission needs to be changed, do you just say ok or do you ask questions until you can fully understand the scope, do you do research, and if that research conflicts, do you ask for a second opinion or simply tell him, ok, go ahead and change it?
Milimbar said:
Your phone is S-off, and rooted, unlocked is totally different. Unlocked means that verizon has allowed that phone to be used on other networks and carriers.
And as far as unlocked by Verizon, I followed a post until I reached an HTC forum indicating it can be unlocked for all carriers....by replacing the carrier OEM identifier token with an unlock code in binary format from HTC. See what I have pritned and attached.
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Click to collapse
I think your issue is you read too much into this. Yes, your phone cane be unlocked, it can run on other carriers and networks.
Your phone can however only use CDMA carriers and networks. Just because it can be unlocked does not mean it can be used on networks that do not support the hardware your phone was made with. nothing can be done with software to change that.
Your second problem is, you are misunderstanding terms, and HTC them self are not helping this. The PDF files you linked say unlocking, they refer to unlocking the bootloader, meaning you gain S-off (you can flash files) The unlocking you are questioning here is to get your phone working on another network.
Those 2 things are entirely different.
A phone is designed to work on specific frequencies when it is designed. Some phones are CDMA phones, some are GSM phones, and some are global (they use both). This is a hardware thing. Nothing changes this once the phone has been made. Our Thunderbolts are CDMA phones, unfortunately we can not just up and go to AT&T or anywhere we want with this phone.
I am sorry for being argumentative with my last post, you are right this is a place to discuss issues like this.
If you search for StraightTalk you'll find that it may be both CDMA and GSM supported depending on where you live. If you search for Thunderbolt other carrier you'll find that some people have had limited success with missing functions getting it to work on other carriers.
If Your switching to another carrier, buy a phone for that carrier or a global phone. It's a lot of work getting a phone to work on another carrier and you can get a smartphone better than your thunderbolt for a low price on a MNVO. If your dead serous on taking your thunderbolt to another carrier it loks like Page plus is going to be your best bet. USE EXTREME CAUTION when flashing your phone as you could brick it and it would do you no good at all.
Hello all, so I recently consulted your fine website about purchasing the Optimus G to use on T Mobile here in Pittsburgh. It seemed to me that people were able to get HSPA+21 and LTE on the phone in the right circumstances, and that was good enough for me. So I bought the phone, unlocked it through cellunlocker.com and everything seemed to be going smoothly. I punched in the standard fast.tmobile.com APN address and I got 4G HSPA+ right away. I then proceeded to drive into downtown Pittsburgh, which now has T Mobile LTE, to see if it would connect. It didn't connect and stayed on HSPA. At that point I drove out of the city and went back down to EDGE and my phone no longer connected to HSPA anymore, only EDGE, until I went into my Mobile Network settings and selected the carrier directly. So I went into T Mobile to ask why my phone won't automatically connect to the most OPTIMUM speed and he couldn't figure it out. As a last ditch effort, we switched SIM cards and my phone automically jumped to LTE and his was stuck on HSPA. So hey, we figured it must be the SIM card keeping me from LTE. He gave me a new card, and it was on LTE until I left the store's broadcast radius. From then on, same story. The phone seems to pretty frequently get stuck on EDGE speeds and I contantly have to go and manually set the network to get HSPA+. What's more, I can't seem to get LTE under any circumstances. Can somebody out there please tell me what's going on? Do I have a defective phone with confused radios? Is T Mobile having a hard time syncing with my AT and T device? Do I need to do something with my APN or Mobile Network settings? Does this have anything to do with the way I unlocked the phone? Is it because the LGOG shares radios for LTE and HSPA or something that it won't default to LTE when it's around? I love absolutely everything about this phone and would like to keep it, but if it keeps behaving like this and won't even give me LTE or consistent HSPA+ then I might as well just get a crappy LG Optimus L9 that at least was designed for the network. Any insight you guys can offer would be much appreciated. Thanks so much!
Here are my current APN settings in case that has anything to do with it:
APN: fast.t-mobile.com
Proxy: Not Set
Port: Not set
Username: Not Set
PAssword: Not set
MMS Proxy: Not set
MMS Port: Not Set
MCC: 310
MNC: 260
Authntification: Not set
APN Type: Not Set
Network Operator: Automatically select
Try flashing the 33-84 radio: http://www.mediafire.com/download/wec8eeext05x8ge/LTEhybrid33-84.zip
That's what I use to flash my LGOG. That's from the Nexus 4 radio thread, and from T-Mobile N4 devices. I was able to add a different APN for AT&T easily, maybe can do the same for your T-Mobile.
- Combines the latest .84 radio from T-Mobile N4 and .33 LTE support.
- The N4 Radio thread: http://forum.xda-developers.com/showthread.php?t=2087227
I see. Well seeing as I'm kind of a noob at this your post intimidates me a bit. How dangerous is it to put these N4 radios onto an LGOG? Will I risk bricking this thing or losing signal forever if I screw it up? Also, I'm assuming that the device must be rooted to do this? Also, if you think it's safe to try is there a thread or something that you can link detailed instructions for? I've never done anything like this in my life...I felt like a rebel just unlocking my phone! Thanks!
acshaffe said:
I see. Well seeing as I'm kind of a noob at this your post intimidates me a bit. How dangerous is it to put these N4 radios onto an LGOG? Will I risk bricking this thing or losing signal forever if I screw it up? Also, I'm assuming that the device must be rooted to do this? Also, if you think it's safe to try is there a thread or something that you can link detailed instructions for? I've never done anything like this in my life...I felt like a rebel just unlocking my phone! Thanks!
Click to expand...
Click to collapse
Not dangerous if you use TWRP. Just make a backup of your current stuff, and if it doesn't work can just restore. It won't hard brick your phone. And I've had it flash on more than one rom so far.
Root needed?
zymphad said:
Not dangerous if you use TWRP. Just make a backup of your current stuff, and if it doesn't work can just restore. It won't hard brick your phone. And I've had it flash on more than one rom so far.
Click to expand...
Click to collapse
I see. Will the phone need to be rooted for that app to be used for the radio ROM? That's probably a silly question to ask on this website especially...but there it is.
I just got this phone and I'm loving it..came from the gs3. I was looking for a thread like this...hoping for a way to unlock the aws band..will root and flash tarp and try this tonight.
Sent from my LG-E970 using Tapatalk 4
---------- Post added at 10:13 AM ---------- Previous post was at 10:12 AM ----------
Twrp** darn auto correct..lol
Sent from my LG-E970 using Tapatalk 4
I don't get lte at all with the FAST apn, I get very fast h+ with epc.tmobile.com. It all depends on your area though, if your tmo towers are refarmed for the correct band that our att phones support.
Sent from my LG Optimus G using Tapatalk 4
Jakeroxs said:
I don't get lte at all with the FAST apn, I get very fast h+ with epc.tmobile.com. It all depends on your area though, if your tmo towers are refarmed for the correct band that our att phones support.
Sent from my LG Optimus G using Tapatalk 4
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Click to collapse
So this modem works on our LG optimus g?
Sent from my LG-E970 using Tapatalk 4
would like to know if there's any update, thank you!
I have almost exact same problem. T-mobile lte not working for me, always getting the hspa+. I went to store and asked for a replacement sim card, then bang, lte shows up with the new sim card. Right after I walked out of the store and left in about 1 minute it's gone, forever. I'm not able to pick up any lte signal anymore. When I put this sim card in my ogp, it fires up lte right away.
I have read in another post people reporting they get lte with unactivated sim card but it went right away when they activated it. Really hope someone to explain for us how this situation is happening.
Thank you for all your great work.
---------- Post added at 02:24 PM ---------- Previous post was at 02:15 PM ----------
I couldn't edit my last post so I'm putting a new reply to add some info.
Both my og and ogp have the same apn settings. I tested them using the same sim card.
I just put another unactivated sim card in the og and surprisingly it picks up lte immediately. I don't want to activate this sim card right now so I can't tell if it would go away if I activate it. I hope this info would help a little bit.
qwertyegg said:
would like to know if there's any update, thank you!
I have almost exact same problem. T-mobile lte not working for me, always getting the hspa+. I went to store and asked for a replacement sim card, then bang, lte shows up with the new sim card. Right after I walked out of the store and left in about 1 minute it's gone, forever. I'm not able to pick up any lte signal anymore. When I put this sim card in my ogp, it fires up lte right away.
I have read in another post people reporting they get lte with unactivated sim card but it went right away when they activated it. Really hope someone to explain for us how this situation is happening.
Thank you for all your great work.
---------- Post added at 02:24 PM ---------- Previous post was at 02:15 PM ----------
I couldn't edit my last post so I'm putting a new reply to add some info.
Both my og and ogp have the same apn settings. I tested them using the same sim card.
I just put another unactivated sim card in the og and surprisingly it picks up lte immediately. I don't want to activate this sim card right now so I can't tell if it would go away if I activate it. I hope this info would help a little bit.
Click to expand...
Click to collapse
Help! I have the exact same problem. I have a brand new att lg optimus g and unlocked it. Popped in the sim and bam LTE! Ran a bunch of speedtests, drove to my friends house and it switched to 4g and hasn't come back. The guy at tmobile wasn't sure. ...any help ? I'm going to root this and try flashing a new rom...maybe radio?
Seems to be an issue with this device, perhaps it's doing something to the SIM cards (who the hell knows) because mine did/does the exact same thing, and here's my particular example:
When I first got this LGOG last Sunday (8 days ago) I put my T-Mobile microSIM in it (one of the TM9190 series SIM cards) and got LTE off the bat without any issues. I kept the stock ROM on here for the first day or so and never had any issues and then I got into doing the typical root/unlock bootloader/install recovery/backup stock ROM/flash custom ROM/etc routine and even after that I was still able to get LTE working almost immediately.
A few days ago I noticed that the LTE wasn't being picked up, and it hasn't since. I've flashed several radios for testing (.33, .48, .33-.84 hybrid, etc) and the ones that are LTE ready still didn't get LTE so I just flashed the whole thing back to complete JB stock (JZO54K, the last available LG build) and even that didn't help - I've yet to see LTE show up in any respect at all with that SIM card.
Now the interesting part:
I have another microSIM that had prepaid service a few months back, bought it at the same time as the one I use for my primary service - they were on sale from T-Mobile online for $.99 each so I got two and kept the other one around just to have it.
In spite of all the flashing I've done in the past few days, with like 5 ROMs tested, a kernel or two, and maybe 7 flashes back to pure stock using LGNPST and the LGE970AT-01-V20j-310-410-MAR-08-2013 ROM (the stock one), after all that flashing torture I put this LGOG through, as soon as I put that other SIM card in it - which is not active at this time - and powered up the phone I got an LTE signal right off the bat without a problem. Had already made the APN changes to fast.t-mobile.com so they just kicked right in and wham, 4G LTE right there on the status bar.
And yes, the SIM cards are the same "series" (?!?!) with TM9190 imprinted on both of them - they also have the same code on the front side (620048) and their serial numbers are just a few digits off in sequence - like I said, I bought both of them with the same order so, it stands to reason they'd be from the same batch.
Loaded a few web pages on the T-Mobile prepaid billing site (it's what comes up when you insert a prepaid already activated but not presently in use SIM, very limited but it does work), checked the system stats, everything showed me I was connected to T-Mobile with their LTE service, this phone, and that other SIM card including the status bar icon being the traditional 4G LTE one (big 4, little G, little LTE under it).
Then I rebooted the phone and that was that, the LTE capability just up and vanished like a fart in the wind, and I've done most everything that I could do - including reading a few hundred posts in two dozen threads - to get it functional again and it just doesn't work anymore.
I suppose it's not a big deal to me since T-Mobile's HSPA+ is fine with me, I regularly pull in 10-15Mbps on a speed test in various locations (was out earlier today testing stuff in the eastern parts of Vegas), but I am somewhat pissed that I am unable to get that LTE functionality working again.
Tried:
- a complete stock flash, several times, of the AT&T JB ROM, no dice
- all the currently available LTE-capable radios, no dice
- an AT&T SIM but it's not provisioned so it doesn't work at all (T-Mobile doesn't do that, hrmmm... their SIM cards work months later even after the number has been assigned to another customer, go figure)
- all the hidden menu options (3854#*970#, WCDMA automatic, tried forcing LTE only, several other things), no dice
- tried manually setting LTE only with *#*#4636#*#* using custom ROMs, no dice
- adding the LTE enabling lines to build.prop, no dice
Nothing works, so I'm only left to conclude that either a) T-Mobile is doing something funky (highly unlikely), b) something is borked with the phone (potentially true), or maybe c) the phone is doing something to the SIM cards after a reboot or any change in the network mode from LTE to anything else (leaning towards this possibility more).
I can't explain it, I can't figure it out, and I can't get LTE working anymore but as I said, the HSPA+ is enough for me as here at home the LTE signal is somewhat weak (1-2 bars at best whereas HSPA+ pulls in 5 bars and a -61dB signal almost constantly).
I wish I could figure it out because I'd like to do more testing with LTE enabled but apparently once LTE gets disabled for whatever reason after having it actually working, not once but twice now it just dies and never becomes possible again.
Stranger things I suppose...
If anyone does ever figure this fiasco out, post whatever solution you came up with or discovered so the rest of us can give it a shot as well 'cause I'd love to be able to enable LTE if I so chose. This is pretty frustrating in the long run - if it never ever worked at all that would be one thing, but having it work then suddenly just disappear never to work the same again, that's just pooched.
Slightly off-topic, but how's the battery life compared to AT&T? Or, in general, is it okay?
br0adband said:
Seems to be an issue with this device, perhaps it's doing something to the SIM cards (who the hell knows) because mine did/does the exact same thing, and here's my particular example:
When I first got this LGOG last Sunday (8 days ago) I put my T-Mobile microSIM in it (one of the TM9190 series SIM cards) and got LTE off the bat without any issues. I kept the stock ROM on here for the first day or so and never had any issues and then I got into doing the typical root/unlock bootloader/install recovery/backup stock ROM/flash custom ROM/etc routine and even after that I was still able to get LTE working almost immediately.
A few days ago I noticed that the LTE wasn't being picked up, and it hasn't since. I've flashed several radios for testing (.33, .48, .33-.84 hybrid, etc) and the ones that are LTE ready still didn't get LTE so I just flashed the whole thing back to complete JB stock (JZO54K, the last available LG build) and even that didn't help - I've yet to see LTE show up in any respect at all with that SIM card.
Now the interesting part:
I have another microSIM that had prepaid service a few months back, bought it at the same time as the one I use for my primary service - they were on sale from T-Mobile online for $.99 each so I got two and kept the other one around just to have it.
In spite of all the flashing I've done in the past few days, with like 5 ROMs tested, a kernel or two, and maybe 7 flashes back to pure stock using LGNPST and the LGE970AT-01-V20j-310-410-MAR-08-2013 ROM (the stock one), after all that flashing torture I put this LGOG through, as soon as I put that other SIM card in it - which is not active at this time - and powered up the phone I got an LTE signal right off the bat without a problem. Had already made the APN changes to fast.t-mobile.com so they just kicked right in and wham, 4G LTE right there on the status bar.
And yes, the SIM cards are the same "series" (?!?!) with TM9190 imprinted on both of them - they also have the same code on the front side (620048) and their serial numbers are just a few digits off in sequence - like I said, I bought both of them with the same order so, it stands to reason they'd be from the same batch.
Loaded a few web pages on the T-Mobile prepaid billing site (it's what comes up when you insert a prepaid already activated but not presently in use SIM, very limited but it does work), checked the system stats, everything showed me I was connected to T-Mobile with their LTE service, this phone, and that other SIM card including the status bar icon being the traditional 4G LTE one (big 4, little G, little LTE under it).
Then I rebooted the phone and that was that, the LTE capability just up and vanished like a fart in the wind, and I've done most everything that I could do - including reading a few hundred posts in two dozen threads - to get it functional again and it just doesn't work anymore.
I suppose it's not a big deal to me since T-Mobile's HSPA+ is fine with me, I regularly pull in 10-15Mbps on a speed test in various locations (was out earlier today testing stuff in the eastern parts of Vegas), but I am somewhat pissed that I am unable to get that LTE functionality working again.
Tried:
- a complete stock flash, several times, of the AT&T JB ROM, no dice
- all the currently available LTE-capable radios, no dice
- an AT&T SIM but it's not provisioned so it doesn't work at all (T-Mobile doesn't do that, hrmmm... their SIM cards work months later even after the number has been assigned to another customer, go figure)
- all the hidden menu options (3854#*970#, WCDMA automatic, tried forcing LTE only, several other things), no dice
- tried manually setting LTE only with *#*#4636#*#* using custom ROMs, no dice
- adding the LTE enabling lines to build.prop, no dice
Nothing works, so I'm only left to conclude that either a) T-Mobile is doing something funky (highly unlikely), b) something is borked with the phone (potentially true), or maybe c) the phone is doing something to the SIM cards after a reboot or any change in the network mode from LTE to anything else (leaning towards this possibility more).
I can't explain it, I can't figure it out, and I can't get LTE working anymore but as I said, the HSPA+ is enough for me as here at home the LTE signal is somewhat weak (1-2 bars at best whereas HSPA+ pulls in 5 bars and a -61dB signal almost constantly).
I wish I could figure it out because I'd like to do more testing with LTE enabled but apparently once LTE gets disabled for whatever reason after having it actually working, not once but twice now it just dies and never becomes possible again.
Stranger things I suppose...
If anyone does ever figure this fiasco out, post whatever solution you came up with or discovered so the rest of us can give it a shot as well 'cause I'd love to be able to enable LTE if I so chose. This is pretty frustrating in the long run - if it never ever worked at all that would be one thing, but having it work then suddenly just disappear never to work the same again, that's just pooched.
Click to expand...
Click to collapse
Thanks for posting your experiences. I've had the exact same problem, though I've never been able to get LTE working at all with my phone. I'm planning on taking a trip to a T-Mobile location within the next few days and see what they can do. Maybe they'll let me try putting my SIM in some of their display phones to see if I can get an LTE connection. Then at least I could probably rule out the SIM as the problem.
643121 said:
Thanks for posting your experiences. I've had the exact same problem, though I've never been able to get LTE working at all with my phone. I'm planning on taking a trip to a T-Mobile location within the next few days and see what they can do. Maybe they'll let me try putting my SIM in some of their display phones to see if I can get an LTE connection. Then at least I could probably rule out the SIM as the problem.
Click to expand...
Click to collapse
Make sure that your phone has the fast.t-mobile.com APN info in place (just create a new APN with that info if needed, maybe call it T-Mobile LTE and see what happens. My guess is if they put a new unused SIM into your phone it'll most likely kick into 4G LTE right from the start (as long as the APN is in place) and then at some point it'll switch to HSPA+ and it'll never go back like it has for those of us that have noticed it.
Who knows... it's probably just one of those things.
br0adband said:
Make sure that your phone has the fast.t-mobile.com APN info in place (just create a new APN with that info if needed, maybe call it T-Mobile LTE and see what happens. My guess is if they put a new unused SIM into your phone it'll most likely kick into 4G LTE right from the start (as long as the APN is in place) and then at some point it'll switch to HSPA+ and it'll never go back like it has for those of us that have noticed it.
Who knows... it's probably just one of those things.
Click to expand...
Click to collapse
Could be...I've always had my settings on T-Mobile LTE, and I even called T-Mobile and confirmed every field in the settings with them. When I explained that I still couldn't get LTE, they had no other solution for me. The lady on the line didn't even know that LTE was faster than HSPA+, so I wasn't exactly expecting any sort of resolution. I think the reps in-store will be more suited to this type of issue.
Bought a refurb SCH-I545 Verizon to run on Tmobile network. Created a new APN and have things working but signal is rather poor. Seems to hunt around a LOT from no signal to full signal and data 2G to 4GLTE. Not consistent at all. Many calls being missed and sometimes trying to call out, I have no signal. Tmobile is out of ideas. I think I have most settings right but something is either wrong with the phone or a setting is off.
Can anyone confirm?
I am considering rooting the phone to delete all the bloatware? I am not sure if the boot loader will be opened? I would not mind losing the Verizon boot screen and the "sim is not verizon" BS....
At first, tmobile thought the phone did not support 1,9ghz but all documents I can find say it is fully supported. Do I need some radio apps?
cobra112 said:
Bought a refurb SCH-I545 Verizon to run on Tmobile network. Created a new APN and have things working but signal is rather poor. Seems to hunt around a LOT from no signal to full signal and data 2G to 4GLTE. Not consistent at all. Many calls being missed and sometimes trying to call out, I have no signal. Tmobile is out of ideas. I think I have most settings right but something is either wrong with the phone or a setting is off.
Can anyone confirm?
I am considering rooting the phone to delete all the bloatware? I am not sure if the boot loader will be opened? I would not mind losing the Verizon boot screen and the "sim is not verizon" BS....
At first, tmobile thought the phone did not support 1,9ghz but all documents I can find say it is fully supported. Do I need some radio apps?
Click to expand...
Click to collapse
Have you tried asking in the T-Mobile S4 help forum?
If not, try posting your question here:
http://forum.xda-developers.com/showthread.php?t=2324421
You'll probably get better results.
Good luck!
Hello people. I am hoping for some help. Have s4 mini I9195. Unlocked. Currently I am connected to T-Mobile network. However can only get 2g in my area. So bought, activated, registered, and paid for att account. Now have both T-Mobile and att. However, when plugging in the att aim it WILL NOT connect to att. I get 4 Signal bars on phone but no connection. Have correct apn. Spent two hours with att it's not on their end. Sim card works fine in different phones and other att sims WILL NOT work in my phone. So we know it's NOT a Sim issue. And remember T-Mobile network is connected and working. Only att is the problem and will not connect. Any ideas?? Please help??
I'm on the verge of flashing custom recovery, rom, gapps, to maybe fix this but want to make sure I am not missing something more simple first.
I've done all the basic stuff from resetting phone, apns, closest tower, etc.. Just see seems like phone will not accept att now. It did for first night for about 15 mins got texts and Signal, but nothing since. I am stumped.
Thank you for any help