[Q] How to PROPERLY unlock Verizon for T-Mobile?? - T-Mobile Samsung Galaxy S 5

I need to get my Data and calls working with this Verizon S5.
I bought it at an authorized T-MOBILE dealer without realizing it was a Verizon model.
They unlocked it but obviously didn't do it right. The Verizon Internet APN is still showing but cannot remove and cannot delete. Data and calls do not work when adding T-Mobile APN info, either. I have a constant message along the top saying "This SIM card is from an unknown source". I get a similar message when trying to make phone calls. Sometimes they will go through but only intermittently.
I want to know.....
Can I put a T-Mobile ROM on my SM-G900V without bricking it and get Data and calling back? Has this been successfully done before? Links? Any idea on how to get the Verizon S5 working properly on the T-Mobile network at all?
The guys at the store are idiots, will not help, screwed me over saying i signed some kind of doc agreeing to a 72 hour return policy, not a 14-day return policy... My fault for not reading the fine print, yes... But their intentions were to screw people over from the beginning. Makes me want to just "RAAAAAAAWWR"
********EDIT**********
I did find a thread in the QnA by searching for "Unlock" and he has successfully put a t-mobile ROM on it, so why does his data work and mine doesn't ??? Any ideas?? I cannot completely test the theory at the moment because i'm at work but i am posting this in case anyone knows why the data would not work. I'm in the process of contacting Verizon directly to see if they have anything of use, but i doubt it.

That sounds like your device isn't actually unlocked.
Just flashing a different carrier firmware don't unlock the phone from my understanding.

Verizon s5 (and s4) are carrier unlocked. I use both on T-Mobile with no issues
I have done this with 2 iPhone 5s's, an i545 Verizon S4 (which I loved), a N900V Verizon Galaxy Note 3 and now on an SM-G900V Verizon S5. All are carrier unlocked out of the box and work with T-Mobile. There are a few caveats.
For the android devices, here is what you can do without obtaining root:
1. if you remove your Verizon SIM and put in the T-Mobile SIM calls should work without any change except you need to be in global mode. In settings, change settings/connections/more networks/mobile networks/network mode/ to global.
2. To get data working, go to settings/connections/more networks/mobile networks/access point names and edit the T-Mobile settings. The name does not matter, but the APN should be fast.t-mobile.com
3. To get MMS you have to change a few other settings (but leave all others unchanged):
MMSC should be http://mms.msg.eng.t-mobile.com/mms/wapenc
MCC should be 310
MNC should be 260
APN Type should be default,mms/supl,dun
4. You can't remove the "SIM is from an unknown source" message without root. I believe you can stop the message by holding the notification until you find the app info, and then force stop it. But it will return after any reboot.
If you are willing to root your phone (I used Towelroot), in addition to the above you can:
5. Remove the message about the SIM by freezing "Setup Wizard 1.0" using Titanium Backup
6. Using the app "Advanced Signal Status" you can set your phone to LTE/GSM only so it no longer looks for CDMA service
Summary: Changing Verizon S4, Note 3 and S5 phones (as well as the iPhones) to T-Mobile service is not difficult. I switched carriers completely for my entire 5 line contract without changing phones. I now have unlimited data on 4 of the 5 phones (one user does not need much), and my monthly bill is half of my old Verizon service. Yes - HALF.

exitpr0gram said:
I need to get my Data and calls working with this Verizon S5.
I bought it at an authorized T-MOBILE dealer without realizing it was a Verizon model.
They unlocked it but obviously didn't do it right. The Verizon Internet APN is still showing but cannot remove and cannot delete. Data and calls do not work when adding T-Mobile APN info, either. I have a constant message along the top saying "This SIM card is from an unknown source". I get a similar message when trying to make phone calls. Sometimes they will go through but only intermittently.
I want to know.....
Can I put a T-Mobile ROM on my SM-G900V without bricking it and get Data and calling back? Has this been successfully done before? Links? Any idea on how to get the Verizon S5 working properly on the T-Mobile network at all?
The guys at the store are idiots, will not help, screwed me over saying i signed some kind of doc agreeing to a 72 hour return policy, not a 14-day return policy... My fault for not reading the fine print, yes... But their intentions were to screw people over from the beginning. Makes me want to just "RAAAAAAAWWR"
********EDIT**********
I did find a thread in the QnA by searching for "Unlock" and he has successfully put a t-mobile ROM on it, so why does his data work and mine doesn't ??? Any ideas?? I cannot completely test the theory at the moment because i'm at work but i am posting this in case anyone knows why the data would not work. I'm in the process of contacting Verizon directly to see if they have anything of use, but i doubt it.
Click to expand...
Click to collapse
Here is a Guide I found that may be exactly what your looking for.
http://forum.xda-developers.com/showthread.php?t=2582747
It works, but may loose a bit of benefits when it comes to Network, since the Verizon doesn't have all T-Mobile bands, but close enough.

maxyoda said:
I have done this with 2 iPhone 5s's, an i545 Verizon S4 (which I loved), a N900V Verizon Galaxy Note 3 and now on an SM-G900V Verizon S5. All are carrier unlocked out of the box and work with T-Mobile. There are a few caveats.
For the android devices, here is what you can do without obtaining root:
1. if you remove your Verizon SIM and put in the T-Mobile SIM calls should work without any change except you need to be in global mode. In settings, change settings/connections/more networks/mobile networks/network mode/ to global.
2. To get data working, go to settings/connections/more networks/mobile networks/access point names and edit the T-Mobile settings. The name does not matter, but the APN should be fast.t-mobile.com
3. To get MMS you have to change a few other settings (but leave all others unchanged):
MMSC should be http://mms.msg.eng.t-mobile.com/mms/wapenc
MCC should be 310
MNC should be 260
APN Type should be default,mms/supl,dun
4. You can't remove the "SIM is from an unknown source" message without root. I believe you can stop the message by holding the notification until you find the app info, and then force stop it. But it will return after any reboot.
If you are willing to root your phone (I used Towelroot), in addition to the above you can:
5. Remove the message about the SIM by freezing "Setup Wizard 1.0" using Titanium Backup
6. Using the app "Advanced Signal Status" you can set your phone to LTE/GSM only so it no longer looks for CDMA service
Summary: Changing Verizon S4, Note 3 and S5 phones (as well as the iPhones) to T-Mobile service is not difficult. I switched carriers completely for my entire 5 line contract without changing phones. I now have unlimited data on 4 of the 5 phones (one user does not need much), and my monthly bill is half of my old Verizon service. Yes - HALF.
Click to expand...
Click to collapse
i will verify everything he said above as true as i have done the same. i can also verify that you flash a tmobile rom (be sure not to flash any baseband/modem or any other partition) and you can get VoLTE to work etc... The only thing missing is the 2100 MHz radio which means HSDPA+ will not work in all areas but that is a hardware limitation.

SM-Galaxy s5 G900V Issues
maxyoda said:
I have done this with 2 iPhone 5s's, an i545 Verizon S4 (which I loved), a N900V Verizon Galaxy Note 3 and now on an SM-G900V Verizon S5. All are carrier unlocked out of the box and work with T-Mobile. There are a few caveats.
For the android devices, here is what you can do without obtaining root:
1. if you remove your Verizon SIM and put in the T-Mobile SIM calls should work without any change except you need to be in global mode. In settings, change settings/connections/more networks/mobile networks/network mode/ to global.
2. To get data working, go to settings/connections/more networks/mobile networks/access point names and edit the T-Mobile settings. The name does not matter, but the APN should be fast.t-mobile.com
3. To get MMS you have to change a few other settings (but leave all others unchanged):
MMSC should be http://mms.msg.eng.t-mobile.com/mms/wapenc
MCC should be 310
MNC should be 260
APN Type should be default,mms/supl,dun
4. You can't remove the "SIM is from an unknown source" message without root. I believe you can stop the message by holding the notification until you find the app info, and then force stop it. But it will return after any reboot.
If you are willing to root your phone (I used Towelroot), in addition to the above you can:
5. Remove the message about the SIM by freezing "Setup Wizard 1.0" using Titanium Backup
6. Using the app "Advanced Signal Status" you can set your phone to LTE/GSM only so it no longer looks for CDMA service
Summary: Changing Verizon S4, Note 3 and S5 phones (as well as the iPhones) to T-Mobile service is not difficult. I switched carriers completely for my entire 5 line contract without changing phones. I now have unlimited data on 4 of the 5 phones (one user does not need much), and my monthly bill is half of my old Verizon service. Yes - HALF.
Click to expand...
Click to collapse
Hey I kinda wanted to know if you could help me out on my issue little problem...I have a unlocked G900V and my problem is
I am on T-mobile network and everything is perfect except when I make a call. here is the forum i made with details, but no solution.
http://forum.xda-developers.com/galaxy-s5/help/sm-g900v-verizon-s5-using-t-mobile-t2890378
Hope you can help me out...if at all. Would appreciate it.

ddarvish said:
i will verify everything he said above as true as i have done the same. i can also verify that you flash a tmobile rom (be sure not to flash any baseband/modem or any other partition) and you can get VoLTE to work etc... The only thing missing is the 2100 MHz radio which means HSDPA+ will not work in all areas but that is a hardware limitation.
Click to expand...
Click to collapse
The Verizon SM-900V does support the 2100MHz radio, Band 4 just has to be enabled. I followed these instructions to get it working properly:
http://forum.xda-developers.com/showthread.php?t=2582747
http://forum.xda-developers.com/showthread.php?t=2530523
Notes: It says it's for the Note 3, but it does work on the Galaxy S5. You will need to use the stock ROM with the stock dialer for this to work.
I was wondering, can you point me in the right direction to a good T-Mobile ROM to try out, that you know will work properly on the 900V? It will have to work on the stock NE9 or NI2 firmware. I just don't have a whole lot of time to test between studying and taking all of these MIT online courses. I can tell you that it really sucks having a locked bootloader though Lol. Thanks in advance!

Where are you guys finding that Android Data Tool? I don't see it on the play store...by any chance, can someone post the apk?

Related

Using iPad Sim in Note

I'm trying to use my iPad sim (converted into a regular sim card) in my note, but I am unable to use the APN "broadband". Everytime I create that APN, it will automatically delete it off the list. It seems like AT&T is blocking that APN from being used. Is this possible, or a way around this?
Thanks
Try using "phone" as the apn
Sent from my SAMSUNG-SGH-I717 using xda premium
the only apn ipads have is broadband.... some older prepaid unlimited ones have isp.cingular as the apn
yeah...only APN iPads can use is "broadband". Anyone know how to bypass this?
anyone know how to do this?
ogxjason15 said:
anyone know how to do this?
Click to expand...
Click to collapse
Are you rooted? I don't have an answer, but I suspect the solution involves being rooted and freezing an AT&T management .apk that is deleting any APNs that you add.
burhanistan said:
Are you rooted? I don't have an answer, but I suspect the solution involves being rooted and freezing an AT&T management .apk that is deleting any APNs that you add.
Click to expand...
Click to collapse
Yes, I am currently running TPC NOTE V2.
My first contribution to the forum
I got the ATT Note last weekend off second hand, so no contract.
I want to use it primarily as a tablet with data plan (google voice can serve as phone if needed). So I want to try iPad data plan.
I got my iPad sim activated for a monthly plan, but as members noted, that for some reason, the new APN setting can not be saved for some reason (can we blame ATT?). So you can not use the iPad sim directly.
I tried couple of ways, and finally figured out how to do it on my Note:
(1) Create the new APN as previously instructed (call it "iPad" or whatever), with "phone" as the APN setting. Save it.
(2) On the APN list, select the new one, so the default AT&T PTA is grey out, and the new one ("iPad") is on.
(3) Now, change the APN from "phone" to "Broadband" (Sorry I forgot this important step last night!)
(4) Then, instead of saving the change (which would fail), I jumped out of the setting and go straight to home, then web browser to click a link. It might give you an error the first time, but when I clicked the link again, it would eventually start working, and the 4G icon showed up on the top menu.
I wen back to APN setting. Found the new setting "iPad" was gone. However, I did notice the default APN setting (AT&T PTA) remained grey out (not selected).
So, it seems if you force off the default setting, you can go straight to 4G network with iPhone's data plan.
I disabled the cellular network and reactivated it. The connection still worked, so hopefully it will last.
[Update]: Sorry I forgot the important step (3). I tried again, and the whole process works. Yes, I have the phone unlocked already for T-Mobile use (paid $25 online to get the unlock code. Not sure if it is necessary for AT&T data sim card, though).
i think
I think your note has to be unlocked .thats only way
iPad Sim
I am using iPad SIM in note and its working fine. I don't get LTE but HSPA Speeds. I picked new SIM from AT&T Store for my iPad and activated under different email now using it with $30 3GB Plan. I have 'broadband' as apn. My note is unlocked running SAUROM RC 6. I had issues with RC 7 so reverted back.
Rudeman74 said:
I think your note has to be unlocked .thats only way
Click to expand...
Click to collapse
It just can't be on an AT&T based rom. Since Saurom rom is based off of Rogers, the apn "broadband" will work. Has nothing to do with unlock, it's the software that prevents you from using that APN.
montanan said:
I am using iPad SIM in note and its working fine. I don't get LTE but HSPA Speeds. I picked new SIM from AT&T Store for my iPad and activated under different email now using it with $30 3GB Plan. I have 'broadband' as apn. My note is unlocked running SAUROM RC 6. I had issues with RC 7 so reverted back.
Click to expand...
Click to collapse
You are now able to use LTE on the note since AT&T now has a plan for the "New iPad". You just need to change the plan in the online management. Just change the IMEI to the "New iPad". The APN will still be broadband.
I found a IMEI from some person selling it on eBay
powerbooks said:
I got the ATT Note last weekend off second hand, so no contract.
I want to use it primarily as a tablet with data plan (google voice can serve as phone if needed). So I want to try iPad data plan.
I got my iPad sim activated for a monthly plan, but as members noted, that for some reason, the new APN setting can not be saved for some reason (can we blame ATT?). So you can not use the iPad sim directly.
I tried couple of ways, and finally figured out how to do it on my Note:
(1) Create the new APN as previously instructed (call it "iPad" or whatever), with "phone" as the APN setting. Save it.
(2) On the APN list, select the new one, so the default AT&T PTA is grey out, and the new one ("iPad") is on.
(3) Now, change the APN from "phone" to "Broadband" (Sorry I forgot this important step last night!)
(4) Then, instead of saving the change (which would fail), I jumped out of the setting and go straight to home, then web browser to click a link. It might give you an error the first time, but when I clicked the link again, it would eventually start working, and the 4G icon showed up on the top menu.
I wen back to APN setting. Found the new setting "iPad" was gone. However, I did notice the default APN setting (AT&T PTA) remained grey out (not selected).
So, it seems if you force off the default setting, you can go straight to 4G network with iPhone's data plan.
I disabled the cellular network and reactivated it. The connection still worked, so hopefully it will last.
[Update]: Sorry I forgot the important step (3). I tried again, and the whole process works. Yes, I have the phone unlocked already for T-Mobile use (paid $25 online to get the unlock code. Not sure if it is necessary for AT&T data sim card, though).
Click to expand...
Click to collapse
Thanks much for this ....I could not find any other solution so far.....I appreciate you writing this. It works.

[Q] Tips on using a G900T on AT&T

I finally got sick of having a locked bootloader, so I bought an unlocked Tmobile running nk2, rooted it, and cleaned up the bloatware with Titanium Backup. Now I'm looking at putting together a list of tips for using a G900T on AT&T. I've created the appropriate APN settings. If anyone with experience on this could weigh in with some things I should look out for or do proactively, it would be useful not only to me but to other AT&T users looking to get away from the AT&T locked bootloader. Thanks in advance for any advice.
Working APN settings
Here are the APN settings that are working great for me on AT&T. To set these, go to SETTINGS / MORE NETWORKS / MOBILE NETWORKS/ ACCESS POINT NAMES. Either create a new one using the "+" or edit the one you are using already.
NAME: smartphone
APN: phone
PROXY: not set
PORT: not set
USERNAME: not set
PASSWORD: not set
SERVER: not set
MMSC: http://mmsc.mobile.att.net
MULTIMEDIA MESSAGE PROXY: proxy.mobile.att.net
MULTIMEDIA MESSAGE PORT: 80
MCC: 310
MNC: 410
AUTHENTICATION TYPE: not set
APN TYPE: default,mms,supl
APN PROTOCOL: IPv4
APN ROAMING PROTOCOL: IPv4
TURN APN ON/OFF: APN turned on
BEARER: unspecified
MOBILE VIRTUAL NETWORK OPERATOR TYPE: none
MOBILE VIRTUAL NETWORK OPERATOR VALUE: not set
The two items TURN APN ON/OFF: APN turned on and MOBILE VIRTUAL NETWORK OPERATOR VALUE: not set are ghosted out so I was unable to change them. In APN TYPE you should enter the information without any spaces after the commas.
How to root if your Tmobile s5 is already updated to nk2 or nh5
I used the instructions found here and it was super effective:
http://forum.xda-developers.com/tmobile-galaxy-s5/general/how-to-root-s5-firmware-knox-0x0-t2909352
Note: if you're not familiar with PC Odin, it will be good news to you that you don't have to install it. Just unzip it into a directory with the INI file and run it.
Good Post! I could have used this four months ago when I jumped to AT&T from T-Mo. I have not had any problems. The only thing I can think of is that I disabled wifi calling. I have had good success running international ROMs on it. I'm currently on BobCat Romhttp://forum.xda-developers.com/galaxy-s5/development/rom-bobcatromevov1-0ota-update-t2836665 ...Excellent...
I'm running Omega on my TMO S5 on AT&T. My APN is a little different but I've also tried the one posted above and get about the same results with either. The only other thing I did was download AT&T's Visual Voice Mail app. It's a great way to handle voicemail messages.
+1121611611 Error 122 Invalid Number
This is a problem that pops up for those of us who have started using a Tmobile s5 on AT&T--you start getting repeated texts that say "+1121611611 Error 122 Invalid Number". The problem appears to be brought about when you use a phone from one carrier on another carrier.
I found a fix for this at http://forum.xda-developers.com/galaxy-s4/help/error-invalid-text-reboot-t2865399
Short version: turn off/disable the visual voicemail app.
Here is the relevant text from that page:
PROBLEM: I recently switched from T-Mobile to AT&T, bringing over my unlocked T-Mobile Galaxy S4 (not rooted, running stock android, got the SIM unlock code from T-Mobile). After fiddling with the APN settings everything seems to be working fine, except every time I reboot I get the following text message:
From: +1121611611
122 Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short code. Activate:dt=15
Any ideas? I first saw this error text the first time I rebooted my phone after switching the SIM card to AT&T, and I get the same text whenever I reboot my phone now.
SOLVED: This was being caused by the T-Mobile Visual Voicemail app. Disabling the app fixed the problem.
Sticky this maybe?
Mods, do you think this is worth getting "sticky" status?
kettir said:
SOLVED: This was being caused by the T-Mobile Visual Voicemail app. Disabling the app fixed the problem.
[/B][/I]
Click to expand...
Click to collapse
I stopped getting these errors when I installed Omega ROM and AT&T's visual voice mail.
gspears said:
I stopped getting these errors when I installed Omega ROM and AT&T's visual voice mail.
Click to expand...
Click to collapse
Thanks for the input. Flashing a ROM may be more advanced than I can address here, and may be more advanced than some of the people just looking for a "how do I get this working?" thread.
How to turn off WIFI calling
2.Tap Settings.
3.Scroll to 'NETWORK CONNECTIONS,' then tap More networks.
4.Tap the Wi-Fi Calling Switch to Off.
I also used Titanium Backup to freeze:
T-Mobile My Account
T-Mobile Name ID
T-Mobile TV
Visual Voicemail
kettir said:
I finally got sick of having a locked bootloader, so I bought an unlocked Tmobile running nk2, rooted it, and cleaned up the bloatware with Titanium Backup. Now I'm looking at putting together a list of tips for using a G900T on AT&T. I've created the appropriate APN settings. If anyone with experience on this could weigh in with some things I should look out for or do proactively, it would be useful not only to me but to other AT&T users looking to get away from the AT&T locked bootloader. Thanks in advance for any advice.
Click to expand...
Click to collapse
I've been my old AT&T SIM carrier on a new TMob S5 for about two weeks -- It's rooted and has Custom Recovery. I froze about 100 Bloats w/ Titanium Backup - installed Wanam to tweak it - and am getting an amazing +/- 0.5%/Hr battery usage on Stock 4.4.2!!! (No gaming or social networking, etc) So, I'm VERY pleased and also chose this route to get away from AT&T's bootloader lock policy.
Only one question: I notice an image of a fliptop phone on my AT&T account page. It used to show a pic of my S3. Is there some file I can edit on the phone to get it to show up as an S5 ? Maybe the build.prop or something?
GF Geek said:
I've been my old AT&T SIM carrier on a new TMob S5 for about two weeks -- It's rooted and has Custom Recovery. I froze about 100 Bloats w/ Titanium Backup - installed Wanam to tweak it - and am getting an amazing +/- 0.5%/Hr battery usage on Stock 4.4.2!!! (No gaming or social networking, etc) So, I'm VERY pleased and also chose this route to get away from AT&T's bootloader lock policy.
Only one question: I notice an image of a fliptop phone on my AT&T account page. It used to show a pic of my S3. Is there some file I can edit on the phone to get it to show up as an S5 ? Maybe the build.prop or something?
Click to expand...
Click to collapse
My AT&T profile also shows a random flip type phone. It must simply be a result of using a non-AT&T phone. I haven't bothered trying to change it.
I'd LOVE to be able to put a caption on the AT&T site with a pic of the S5, something like "TMobile - S5 - Unlocked Bootloader"
(I've got a somewhat sick sense of humor)
lol
[ROM] AT&T OF2_5.0 Stock, Deodexed, Rooted ROM for G900T
You guys should check this out: http://forum.xda-developers.com/tmo...att-of25-0-stock-deodexed-rooted-rom-t3149670
I too got tired of the 900A having a locked bootloader. My buddy recently left Tmobile for Verizon so he had 2 S5's lying around gathering dust. Bought them from him. Sold my ATT S5 on ebay and haven't looked back. Actually still have one that I'm not using. If anyone is interested. Was gonna list it on ebay, but would rather have someone who knows the struggle of a locked bootloader get their hands on it.
Sent from my SM-G900T using XDA Free mobile app
ecera said:
I too got tired of the 900A having a locked bootloader. My buddy recently left Tmobile for Verizon so he had 2 S5's lying around gathering dust. Bought them from him. Sold my ATT S5 on ebay and haven't looked back. Actually still have one that I'm not using. If anyone is interested. Was gonna list it on ebay, but would rather have someone who knows the struggle of a locked bootloader get their hands on it.
Sent from my SM-G900T using XDA Free mobile app
Click to expand...
Click to collapse
I sent you a couple emails. I forgot to give you my contact info on the first one. I also sent you a private message in case the emails don't go through. Let me know!
Thank you.
ecera said:
I too got tired of the 900A having a locked bootloader. My buddy recently left Tmobile for Verizon so he had 2 S5's lying around gathering dust. Bought them from him. Sold my ATT S5 on ebay and haven't looked back. Actually still have one that I'm not using. If anyone is interested. Was gonna list it on ebay, but would rather have someone who knows the struggle of a locked bootloader get their hands on it.
Sent from my SM-G900T using XDA Free mobile app
Click to expand...
Click to collapse
GEEEEEEEZ -- and I thought the "feature" of having a locked bootloader was to prevent someone from stealing it LOL (That's probably what some folks believe -- that it's a wonderful upgrade to provide more "security" enhancements for your own good . . ., or whatever . . .)
I'm just finding a lot of new "features" and "up" grades annoying . . . and feeling a little crotchety this morning

Anyone using this phone with AT&T in the US?

I love this phone....there, I said it. But it's driving me crazy.
I bought it from a Chinese retailer, who shipped it with X821 firmware, but the box states that it's an X820. I doubt there is any difference in the hardware.
I would have left everything as it was, but I can't seem to make phone calls (don't have a data plan yet...yeah, I know....) with anything other than 2G, and that is about to go extinct. When I set it to WCDMA, it shows a UMTS connection, with no carrier designation, but the tower is the same one I connect to with 2G. The phone does sometimes show an AT&T 3G connection in the status bar, but I can't make calls, even though I have full signal. When I place the same SIM in my old HTC Inspire, the same monitoring app shows "UMTS - AT&T HSDPA+" and works just fine.
I'm at my wits end. I have rooted, installed TeamSpain recovery, replaced the firmware with the X829 and even tinkered with the frequency configurations through DFS Studio (which did a lot of complaining, and I'm still not sure if the changes stuck 100%). I also played with APN settings and tried the SIM in different slots, both alone, and with another SIM. And after all of that, still no progress in getting this phone to use a 3G or 4G connection to make calls. If I don't set it to "GSM only", no phone calls in or out. I'm essentially right under a tower, so signal shouldn't be an issue.
If anyone is using the same provider in the US, and is not having these kinds of issues, I'd really appreciate hearing what firmware you are using, and/or what you did to get things working.
I am using it on x820 with official stock 0.17s firmware, and did a dirty flash to cuoco92's 17s firmware. Everything works including HD voice calls, and full LTE.
xterminater07 said:
I am using it on x820 with official stock 0.17s firmware, and did a dirty flash to cuoco92's 17s firmware. Everything works including HD voice calls, and full LTE.
Click to expand...
Click to collapse
I tried this, as well as the Remix ROM. In fact, I think I've tried just about everything, without success. At one point, I had one of the apps indicating a 4G connection, but the phone diagnostics showed GSM (2G). Even the apps aren't all sure what to make of what's going on with the connections reported by this phone.
Currently on the cuoco92 v35 ROM. When WCDMA is enabled, I see simply a good UMTS connection , sans carrier name, in the "Network Cell Info Lite" app, and no ability to make calls. I also often (but not always) see the "AT&T 3G" sign. 4G or LTE never shows at all, even though the diagnostics show that the phone is communicating with an LTE transmitter, when preferred network is set to "unknown". It won't even let me set things like "LTE only".
Any chance you could set your phone to WCDMA and see what the "Network Cell Info Lite" app shows you? Anyone else with this phone on AT&T?
BTW, I am now using a data plan, which I thought might make a difference. It doesn't. EDGE data only for me . New SIM card is on the way, but my hopes aren't high.
Is it possible for a Chinese seller to have borked the phone so thoroughly with their x821 ROM (it's an x820 marked phone), that it keeps any subsequent radios from flashing properly? I don't know how/why it would work for some and not others.
Starting to really dislike this "phone"......it's more of tablet at this point.
Thanks.
I think APN is not set for AT&T
try this:
"Main steps
To use data services on our network with a non-AT&T device, you may need to program the data settings. The sections below provide the correct settings and steps for programming based on your device type and operating system.
.
Access the Settings menu.
Locate and select Wireless & Networks or More Networks.
Select Mobile Networks.
Select Access Point Names.
Locate and select the option to add a new APN. This is usually accessed by a + symbol on the screen or by tapping the menu button.
Program each field using the settings below.
Save the changes to return to the APNs menu and select the new APN.
Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC
MMS proxy
MMS port
MCC 310
MNC 410
Authentication Type None
APN type default
APN protocol IPv4
Bearer Unspecified
Note: If you are unable to program your device following the steps above, refer to your user manual or contact the manufacturer for assistance."
Cadet_C said:
I think APN is not set for AT&T
Click to expand...
Click to collapse
Thanks, but I wish it were so simple. I have tried this, and other APN settings. None work to get this phone to be usable on anything other than 2G.
I just received and activated the replacement SIM. Still no improvement. While typing this, I have Network Cell Info Lite app running, and with the Set Preferred Network Type showing "Unknown" in the phone's diagnostic screen, It will switch randomly between "EDGE AT&T" (which works fine) and "UMTS -" (which is useless). Both have strong signals. For a split second before it switched to "UMTS-", the app showed "GPRS AT&T", but only for a split second before it kicks over to "UMTS-".
I wish someone using this "phone" on AT&T in the US, would run this app to compare notes. It may be that that the phone works fine on a full implementation of LTE (i.e. in locations where AT&T have already deprecated 2G) but not in other areas. Still, that doesn't seem to explain why this phone seems unable to register on the same 3G network, used easily by my other phone, with the very same APN settings and SIM.
You would have to call att and check if they turned our phone on to use lte. If your phone is not "registered" as an LTE capable phone it wouldn't be able to pick it up. This phone has all the bands needed for AT&T because I am using it now. All LTE work straight out the box, and i'm on the latest 19s cn rom
xterminater07 said:
You would have to call att and check if they turned our phone on to use lte. If your phone is not "registered" as an LTE capable phone it wouldn't be able to pick it up. This phone has all the bands needed for AT&T because I am using it now. All LTE work straight out the box, and i'm on the latest 19s cn rom
Click to expand...
Click to collapse
I'm a bit confused. Is this what you did to achieve proper function of this device? I.e. calling AT&T and getting them to do this for you? My conversation with their tech person didn't seem to bear fruit in this regard.
Also, which slot do you have the SIM card in? I've used the stock 17s and now on cuoco92 v35 ROM. There definitely seems to be a difference in how the network settings behave, based on the location of the SIM. At one point, after selecting BAND 6 (when it would let me), the phone showed a constant "AT&T 3G" connection, but it was useless. No calls and no data.

Umidigi F1 and GSIs: Getting them to work with Verizon

Good day all,
I'm encountering an issue: a fairly new phone of mine (Umidigi F1) loses its ability to get data from Verizon Wireless when I install Treble Generic System Images (AOSP-based, typically derived from phhusson's et al work). For clarification, despite being from a small Chinese company, the phone normally fully supports VZW (4G LTE data, calls, and text). While on those GSIs, I get a signal and am able to call people with it, but there is no data from the connection.
The APN settings appear to match the ones that work normally (stock F1 and a Pixel 2), so despite not being able to edit or add a new one, I am led to believe this isn't the culprit. Next, I looked at build.prop; the model, device, and brand info changed from the default states and I believe that VZW may be strict enough not to allow the altered info on their network. Attempting to modify build.prop causes a boot loop, though.
Anybody have any thoughts on what I can do? One of the comments at the top of the build.prop file indicates that it is autogenerated by buildinfo.sh. Should I attempt to modify that instead? Or maybe something else?
Veiran said:
Good day all,
I'm encountering an issue: a fairly new phone of mine (Umidigi F1) loses its ability to get data from Verizon Wireless when I install Treble Generic System Images (AOSP-based, typically derived from phhusson's et al work). For clarification, despite being from a small Chinese company, the phone normally fully supports VZW (4G LTE data, calls, and text). While on those GSIs, I get a signal and am able to call people with it, but there is no data from the connection.
The APN settings appear to match the ones that work normally (stock F1 and a Pixel 2), so despite not being able to edit or add a new one, I am led to believe this isn't the culprit. Next, I looked at build.prop; the model, device, and brand info changed from the default states and I believe that VZW may be strict enough not to allow the altered info on their network. Attempting to modify build.prop causes a boot loop, though.
Anybody have any thoughts on what I can do? One of the comments at the top of the build.prop file indicates that it is autogenerated by buildinfo.sh. Should I attempt to modify that instead? Or maybe something else?
Click to expand...
Click to collapse
many MTK soc devices on pis gsi have this issue with sim based data connection. Some even have issue with sms / text.
I did at one point have data working on one of my mtk phones, only when switched connection typs to 3G. But that was not acceptable because way too slow speeds. A solution may come. but i do not know when.
umidigi-f1-tag
I just got a umidigi f1 and am trying to get it working on Verizon. I have talk ant text(sms and mms) working through sim1. However, like you I can't get data to work.
The odd thing is that I can't seem edit the apn settings. That section is missing from my mobile networks section. I am on a stock rom, not rooted.
The sim I was using is a page plus sim. It gets service though Verizon via Tracphone.
I think my issue is that my apn is not set correctly.
Success!
Go to the phone dialer and dial
*#*#4636#*#*
Go to phone information and change your preferred network type to lte only
The default is lte/umts which probably just good for GSM phones
You should see a lte connect. Hit the ping test to verify if you can ping Google.com
Edited to say, the phone is kind of flaky with regards to the APN setting so ymmv. It was working for me for a while then stopped...
Edited 2: Okay I figured it out. To reveal the Apn menu on Verizon, change the preferred network to LTE only as above, then unselect 4g in the Mobile Network section for the Verizon Sim. Restart the phone. Next time you go to the Verizon section, there should be an Apn setting item. Create the proper Apn for Verizon because the default probably does not work. For me, I needed tracfone.vzwentp.
Here's the phone info screen
Here's the mobile network section for the Verizon Sim. Nonintuituve but had to disable 4g toggle but doesn't have any effect on speed. After a reboot, Apn section shows up
Hellom did you get it to work on Verizon? If so what are the full steps?
Make sure your Verizon sim card is in slot 1. Sadly, it seems like Verizon works best in that slot so not able to use a micro SD card.
On 2 other phones running on Red Pocket Verizon, everything just worked. No need to do anything extra.
Also disable wifi calling.
On my other phone running on tracfone/page plus, I had to do the extra steps in the previous posts above.

Unable to connect to my mobile network

I recently purchased a refurbished phone Samsung Galaxy S21 5G. I just got it yesterday, and found that I am not able to use my mobile network. The sale said it is factory unlocked, and according to the descriptions, it should work just fine with my US Mobile SuperLTE network as well. When I switched on the phone, I see Verizon on the screen and so, I assume that it was locked to Verizon in the past.
When I tried to change the network settings, specifically the APN settings, I get the message "Access Point Name settings are not available for this user." The three dots on the top with reset to default is also greyed out along with Network mode in the previous page. When I click Network Operators and try to connect to the network manually, I am only able to connect to Verizon Wireless and no other. But, calling and messaging seems to work fine. Is it that the unlock process has not been completed properly? Did any of you face the same problem before? It would be great if there is something that I could do to unblock the APN settings as the rest of the phone works really well. The specific model is SM-G991U.
Thanks!
Aisp said:
I recently purchased a refurbished phone Samsung Galaxy S21 5G. I just got it yesterday, and found that I am not able to use my mobile network. The sale said it is factory unlocked, and according to the descriptions, it should work just fine with my US Mobile SuperLTE network as well. When I switched on the phone, I see Verizon on the screen and so, I assume that it was locked to Verizon in the past.
When I tried to change the network settings, specifically the APN settings, I get the message "Access Point Name settings are not available for this user." The three dots on the top with reset to default is also greyed out along with Network mode in the previous page. When I click Network Operators and try to connect to the network manually, I am only able to connect to Verizon Wireless and no other. But, calling and messaging seems to work fine. Is it that the unlock process has not been completed properly? Did any of you face the same problem before? It would be great if there is something that I could do to unblock the APN settings as the rest of the phone works really well. The specific model is SM-G991U.
Thanks!
Click to expand...
Click to collapse
So, you need to go into the settings menu and find about phone, software info. What you want to find is the CSC information.
It will basically look something like this: XAA / XAA-XAA / XAA (or some other letters like VZW or ATT or TMB etc etc.
What taht will tell you is very helpful in determining what rom the phone is running and what kind of device it was originally. Find that in your device and post it and people will help you to figure out what it means.
AsItLies said:
So, you need to go into the settings menu and find about phone, software info. What you want to find is the CSC information.
It will basically look something like this: XAA / XAA-XAA / XAA (or some other letters like VZW or ATT or TMB etc etc.
What taht will tell you is very helpful in determining what rom the phone is running and what kind of device it was originally. Find that in your device and post it and people will help you to figure out what it means.
Click to expand...
Click to collapse
Thank you so much for your reply. I looked through the software section in the about section. I found the following codes about the rom.
Aisp said:
Thank you so much for your reply. I looked through the software section in the about section. I found the following codes about the rom.
Click to expand...
Click to collapse
So the csc info is complicated, I'm no expert on it. But it does look like the OYN indicates it's a multi csc rom. It does have XAA as a part of the code, and that indicates it's 'open' for that specific part. But all the others are VZW. So it's running a vzw rom, obviously.
Your sim US Mobile uses both verizon and t-mobile networks. So it working for calls and texts makes sense, as a vzw phone. You could use patched Odin and flash a different (open) rom, but first you should verify that the device really is unlocked from vzw.
Best way to do that would probably be to insert another carriers sim card and see if it can make calls / texts. If not, it's not unlocked. But are you saying everything works now except mobile data? IOW, no internet access?
I had an international sim card at hand and I put it in. Interestingly the APN settings are no longer blocked. But, I do get a notification from setup wizard saying the inserted sim is not from Verizon and some services may not be available. But, messaging still seemed to work and I was also receiving 4G.
Aisp said:
I had an international sim card at hand and I put it in. Interestingly the APN settings are no longer blocked. But, I do get a notification from setup wizard saying the inserted sim is not from Verizon and some services may not be available. But, messaging still seemed to work and I was also receiving 4G.
Click to expand...
Click to collapse
Oh then yer okay. That message from verizon can be gotten rid of a couple of ways; 1) use adb commands to disable the specific packages 2) use patched Odin and flash a different rom
VZW is the only rom I think that does that, and it's very annoying. I don't remember exactly which packages have to be disabled, but search google and use xda and vzw in keywords and u should find it.
The 2nd option would be my choice. It would do away with vzw crap and with an open rom you may find volte and vowifi will work also.
cheers
Thank you so much for your reply. That sounds great! To just give it a try, I tried putting in a TMobile sim and phone restarted to install software for TMobile. After that the APN settings were unlocked and now I am also able to connect to the internet using my US Moblile sim. The only problem is the the network mode is greyed out.
This rom I think only recognizes network from major telecom providers. So, just flashing with an unlocked rom would just help to unlock all the features and also remove telecom specific crap. I will try to flash it today.
Thank you again!
I also just flashed the stock firmware which is fully unlocked. And there is no bloatware from telecom OEM's. I am now able to use the network and set the APN's, but the Network Mode is still greyed out. Is it possible to know why? I am guessing that if the phone is fully unlocked, I should be able to change the Network Mode. Is there any other info that I can give you to help understand what is happening? I do not see vowifi as well.

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