Hello,
I have just acquired a new (never used) T-Mobile Revvlry Plus XT1965-T, and it seems to be network locked. (Note: I was able to get an OEM unlock code from Motorola, haven't tried it yet, but right now I am only asking about the network lock issue.)
My goal is to install LineageOS 18.1, and use this phone with other mobile service providers in Canada.
I want to understand how to deal with the network lock, and get past it -- I have some questions...
1. If I simply follow the official instructions for installing LineageOS, will this result in a network unlocked phone?
2. If just installing LineageOS won't remove the network lock, why is that? How is the network lock implemented on this phone?
3. Is there any way to clear the network lock, without going through T-Mobile?
4. If I must go through T-Mobile and use their unlock app, I assume that I had better do this before I do anything else, and once the phone is network unlocked using T-Mobile's app, then the phone will remain network unlocked after installing LineageOS, is this correct?
5. I get the impression that there are actually two different phones with the same model number XT1965-T, being the T-Mobile version and the Motorola version, is that right? What are the main differences?
Any other comments, insights, or links are also appreciated. Please keep in mind that while I am highly technical, I am not an expert on Android or smartphones.
Thanks.
opensourceforever said:
Hello,
I have just acquired a new (never used) T-Mobile Revvlry Plus XT1965-T, and it seems to be network locked. (Note: I was able to get an OEM unlock code from Motorola, haven't tried it yet, but right now I am only asking about the network lock issue.)
My goal is to install LineageOS 18.1, and use this phone with other mobile service providers in Canada.
I want to understand how to deal with the network lock, and get past it -- I have some questions...
1. If I simply follow the official instructions for installing LineageOS, will this result in a network unlocked phone?
2. If just installing LineageOS won't remove the network lock, why is that? How is the network lock implemented on this phone?
3. Is there any way to clear the network lock, without going through T-Mobile?
4. If I must go through T-Mobile and use their unlock app, I assume that I had better do this before I do anything else, and once the phone is network unlocked using T-Mobile's app, then the phone will remain network unlocked after installing LineageOS, is this correct?
5. I get the impression that there are actually two different phones with the same model number XT1965-T, being the T-Mobile version and the Motorola version, is that right? What are the main differences?
Any other comments, insights, or links are also appreciated. Please keep in mind that while I am highly technical, I am not an expert on Android or smartphones.
Thanks.
Click to expand...
Click to collapse
1. No, network lock is related to the carrier. If it's a TMO Revvlry+/Revvlry Plus, then it's locked to T-Mobile. This means it can't be used with another carrier essentially. Network lock again just means if a TMO sim is installed (and it's locked to TMO) it will work. If another carrier sim is installed and it's network locked, the sim won't function.
2. If the phone came from TMO, they would lock it to their system.
3. Removing the network lock allows other carriers to be used. There are pay to use services that will network unlock the device within 24 hours. Manual methods exist, but will require more in-depth knowledge. Otherwise, TMO is the one to network unlock it but could take 30 days and may require service with them.
4. Once unlocked it should remain unlocked, regardless of stock or custom ROM.
5. The TMO Revvlry+ (Revvlry Plus) and Moto G7 Plus are the same devices hardware wise. The main difference is the boot animation and logo branding. The Moto G7 Plus is also carrier unlocked.
How did you determine the phone is network locked?
Is the phone tied to a network carrier already?
What is the output from https://www.wipelock.com/iphone-carrier-checker?
jockovonred said:
1. No, network lock is related to the carrier. If it's a TMO Revvlry+/Revvlry Plus, then it's locked to T-Mobile. This means it can't be used with another carrier essentially. Network lock again just means if a TMO sim is installed (and it's locked to TMO) it will work. If another carrier sim is installed and it's network locked, the sim won't function.
2. If the phone came from TMO, they would lock it to their system.
3. Removing the network lock allows other carriers to be used. There are pay to use services that will network unlock the device within 24 hours. Manual methods exist, but will require more in-depth knowledge. Otherwise, TMO is the one to network unlock it but could take 30 days and may require service with them.
4. Once unlocked it should remain unlocked, regardless of stock or custom ROM.
5. The TMO Revvlry+ (Revvlry Plus) and Moto G7 Plus are the same devices hardware wise. The main difference is the boot animation and logo branding. The Moto G7 Plus is also carrier unlocked.
How did you determine the phone is network locked?
Is the phone tied to a network carrier already?
What is the output from https://www.wipelock.com/iphone-carrier-checker?
Click to expand...
Click to collapse
Thanks for your reply, here is some background...
I bought several of these phones on eBay, they were advertised as network unlocked Moto G7 Plus phones, but the seller instead shipped me network locked T-Mobile Revvly+ phones.
My first step was to test a SIM chip from a local mobile provider, and the phones show a message saying they are SIM locked.
The phones are clearly new and unused. The seller claims they are open-box returns.
I called T-Mobile, and T-Mobile says these phones are registered to active accounts, and they can only be unlocked if the account holder requests it. T-Mobile reps also say they are unable to identify the account holder, and offer no solution. The phones are not blacklisted or reported stolen. If I had to guess: most likely, the phones were purchased, activated, and returned to the store, but the T-Mobile account registration was not cleared in their database.
It seems that these phones use an unlock app, rather than an unlock code, and from what I've read, it may not be possible for any third-party unlocking service to unlock these particular phones.
Getting back to my questions in my original post:
- How is the network lock implemented on this phone? (I mean this question from a technical perspective)
- Is there any way to clear the network lock, without going through T-Mobile?
The network lock must be a setting somewhere in the firmware... I've heard people talk about flashing the baseband, but not being a phone expert, I don't know much about that, or if it might apply here...
So again, I am asking: is there some way to network unlock these phones, and make them usable with another service provider? Can I somehow just reflash whatever area in the phone holds the network lock setting with stock code that doesn't have the network lock setting enabled?
Thanks.
opensourceforever said:
the seller instead shipped me network locked T-Mobile Revvly+ phones.
I called T-Mobile, and T-Mobile says these phones are registered to active accounts, and they can only be unlocked if the account holder requests it. T-Mobile reps also say they are unable to identify the account holder, and offer no solution. The phones are not blacklisted or reported stolen. If I had to guess: most likely, the phones were purchased, activated, and returned to the store, but the T-Mobile account registration was not cleared in their database.
Click to expand...
Click to collapse
If they are registered and active, they may have to wait out the time period from T-Mobile to be Network SIM unlocked, depending on when they were originally purchased by the original owner.
If they were returned to the store, how did the eBay seller obtain them?
It seems that these phones use an unlock app, rather than an unlock code, and from what I've read, it may not be possible for any third-party unlocking service to unlock these particular phones.
Click to expand...
Click to collapse
If an unlock app is needed, this may be built into the phones firmware that only T-Mobile can use. It may still require a code to be passed to the unlock app.
Getting back to my questions in my original post:
- How is the network lock implemented on this phone? (I mean this question from a technical perspective)
- Is there any way to clear the network lock, without going through T-Mobile?
Click to expand...
Click to collapse
It's implemented by T-Mobile. T-Mobile is going to be your best shot. You may have to make multiple calls to get through to someone where you can explain the situation and see if they will network unlock the phone.
The network lock must be a setting somewhere in the firmware... I've heard people talk about flashing the baseband, but not being a phone expert, I don't know much about that, or if it might apply here...
Click to expand...
Click to collapse
Baseband typically indicates the frequencies the phone can use to communicate with different networks. If you take a nandroid of the phone, you can always try to flash a new baseband and test. If it doesn't work, restore back.
So again, I am asking: is there some way to network unlock these phones, and make them usable with another service provider? Can I somehow just reflash whatever area in the phone holds the network lock setting with stock code that doesn't have the network lock setting enabled?
Click to expand...
Click to collapse
You can try to flash the T-Mobile Revvlry+ into a Moto G7 Plus: https://forum.xda-developers.com/t/revvlry-to-moto-g7-plus-conversion-guide.4136355/ That would get rid of the T-Mobile software. It's not clear if that would remove the network SIM lock, but if you take a nandroid backup, you can always revert back.
EDIT: I was doing some additional research, and flashing the modems/baseband or converting the TMO Revvlry+ to Moto G7 Plus won't affect the network SIM lock. The app is in the TMO software and you'll have to use that app with the code either TMO provides or an unlock service gives to network SIM unlock the device.
EDIT2: After booting into the phone, do you have the options in the following settings: SIM unlock phone. This link is only for info and reference: use any network provider’s SIM card in T-Mobile REVVLRY+
Hi, thank you again for your reply.
jockovonred said:
If they are registered and active, they may have to wait out the time period from T-Mobile to be Network SIM unlocked, depending on when they were originally purchased by the original owner.
If they were returned to the store, how did the eBay seller obtain them?
Click to expand...
Click to collapse
As mentioned, the phones are clearly brand new and never used.
I would also like to know how the seller obtained them, unfortunately the seller is non-cooperative.
T-Mobile is also curious about how the seller obtained them.
jockovonred said:
It's implemented by T-Mobile. T-Mobile is going to be your best shot. You may have to make multiple calls to get through to someone where you can explain the situation and see if they will network unlock the phone.
Click to expand...
Click to collapse
I may try this again, but I have already spent hours talking to T-Mobile Technical Support with no progress made.
jockovonred said:
You can try to flash the T-Mobile Revvlry+ into a Moto G7 Plus: https://forum.xda-developers.com/t/revvlry-to-moto-g7-plus-conversion-guide.4136355/ That would get rid of the T-Mobile software. It's not clear if that would remove the network SIM lock, but if you take a nandroid backup, you can always revert back.
EDIT: I was doing some additional research, and flashing the modems/baseband or converting the TMO Revvlry+ to Moto G7 Plus won't affect the network SIM lock. The app is in the TMO software and you'll have to use that app with the code either TMO provides or an unlock service gives to network SIM unlock the device.
Click to expand...
Click to collapse
I am still not clear as to why the phones can not be unlocked by replacing certain firmware/software. The lock is a setting somewhere on the phone, why can this setting not just be manually changed/cleared?
jockovonred said:
EDIT2: After booting into the phone, do you have the options in the following settings: SIM unlock phone. This link is only for info and reference: use any network provider’s SIM card in T-Mobile REVVLRY+
Click to expand...
Click to collapse
When I go to the menu: "Settings > Network & Internet > Mobile network", all further options are grayed out.
As such, I am not able to reach the option: "Settings > Network & Internet > Mobile network > Advanced > Network Unlock > Permanent Unlock" as shown at the link you provided.
(For reference: https://www.t-mobile.com/support/de...revvlry/mobile-device-unlock-t-mobile-revvlry)
Any further suggestions/advice much appreciated, I would really like to be able to make use of these phones.
opensourceforever said:
I am still not clear as to why the phones can not be unlocked by replacing certain firmware/software. The lock is a setting somewhere on the phone, why can this setting not just be manually changed/cleared?
Click to expand...
Click to collapse
The app is provided via TMobile. This is not provided via software/firmware except by TMO.
Your best bet at this point is to try a pay to unlock service that will provide instructions on unlocking the SIM, if TMO is unwilling to do it.
(Modems change the baseband used by different providers so changing/updating it via firmware isn't going to unlock the SIM/Network. If you get the SIM/Network unlocked and THEN have an issue with a network carrier, flashing the correct modem for that provider would allow the SIM/Network to communicate.)
opensourceforever said:
When I go to the menu: "Settings > Network & Internet > Mobile network", all further options are grayed out.
As such, I am not able to reach the option: "Settings > Network & Internet > Mobile network > Advanced > Network Unlock > Permanent Unlock" as shown at the link you provided.
(For reference: https://www.t-mobile.com/support/de...revvlry/mobile-device-unlock-t-mobile-revvlry)
Click to expand...
Click to collapse
Do have service with TMO? If not, you might try getting a SIM/Network card from them and inserting it to see if the in-phone options appear so you can unlock it. You might also try escalating the issue with TMO if you are only getting to first line technical support personnel.
The phone is obviously locked to TMO as it's a TMO phone. It's different than the Moto G7 Plus which is already unlocked for all carriers. If you can't get the phone Network/SIM unlocked, maybe return it to the eBay seller and look for the Moto G7 Plus which will give you less headaches.
Related
Okay, so I'm pretty sure when I bought this phone with contract it was network restricted.. I changed my carrier yesterday to t-mobile, so I bought a sim unlock on the net. I received the SIM unlock code, I couldn't get to the input field though (I'm on CM10), but then I was playing with settings and I could successfully connect to T-Mobile, however the signal is weaker than it was before and it has disconnected twice, but still.. so I don't need the unlock code no more am I right? It was cheap so it doesn't matter, I just don't understand how can this phone can be unlocked.
Just curious, what was your original provider? I don't know specifically about T-Mobile, but some carriers allow other SIMs to be used, because they are sharing networks. For example, if you have a locked Rogers phone in Canada, you can use it with a SpeakOut SIM, because SO is riding on Rogers network. Could it be a similar situation for you?
But it's strange that you don't see a prompt for a network lock code when you insert a non-original SIM... I also had to unlock my phone by code, and I got the prompt right after putting in a different SIM. Could it be because you are on CM ROM? A general recommendation is to always unlock you phone from a stock ROM, before flashing a custom one. I am not sure about this, but just thinking out loud...
kt-Froggy said:
Just curious, what was your original provider? I don't know specifically about T-Mobile, but some carriers allow other SIMs to be used, because they are sharing networks. For example, if you have a locked Rogers phone in Canada, you can use it with a SpeakOut SIM, because SO is riding on Rogers network. Could it be a similar situation for you?
But it's strange that you don't see a prompt for a network lock code when you insert a non-original SIM... I also had to unlock my phone by code, and I got the prompt right after putting in a different SIM. Could it be because you are on CM ROM? A general recommendation is to always unlock you phone from a stock ROM, before flashing a custom one. I am not sure about this, but just thinking out loud...
Click to expand...
Click to collapse
I was on Telenor Hungary, now it's T-Mobile, they are whole different providers, no relations at all. Well yeah, I've thought about that stock ROM thing too, but I still don't think it would connect to a different carrier because of the custom ROM. But it works strangely though, couldn't set up mobile net yet, and when I was on the T-Mobile hotline, it disconnected and the phone said the SIM might be corrupted.
So I tested, I can make phone calls, but everytime I reboot the phone I have to connect to the network manually from settings.. So I'm gonna try with stock ROM, and use the sim unlock code. Can I also use stock-based ROMs? Thanks.
I've got a an unlocked rooted VZW DE. I'm going to Europe. Is the phone SIM unlocked ?? Can I just insert a European sim card ?
IOW, does an unlocked bootloader also unlock the sim card ? Or do I have to spend an hour talking to Verizon?
Thanks,
sean
After talking with VZW, they tell me the phone comes SIM inlocked! Interesting if true. I'll find out next week.
sean
Any Verizon LTE phone should automatically be sim unlocked without the bootloader being unlocked due to Block C agreements requiring Verizon to allow any compatible phone to use the network. Since LTE is basically the evolution of GSM, most (I won't say all, because there may be an exception) LTE devices have GSM capabilities. Verizon can't legally sim lock the LTE radios, so they have just stopped sim locking global phones.
tl;dr Yes, it is by default sim unlicked. Just throw in the sim and update apn settings if necessary (they may be preprogrammed). You probably won't have LTE, but HSPA (and, I assume, HSPA+) should work fine.
Edit: I just reread and realized that you had updated the post with what I just said... You can ignore this.
No. I appreciate the background. And really pleased it confirmed what Verizon said.
Is there a list someplace of the APN s for French providers? I can just imagine trying to find it out from the kiosk manager using my French!
Sean
Sent from my XT1060 using XDA Free mobile app
I think they may have that information on the provider's website. You may want/need to plan ahead to determine what carriers are there (which you probably know already) and check out their sites, or you can probably Google '[Carrier Name] apn settings' and find it that way. I've never been in a situation to change the apn settings, but I think once you insert the new sim, the setting is available under Settings > Wireless and Networks > More... > Mobile Network Settings > Access Point Names.
Has anyone been able to SIM / network unlock Sprint variant of LG G4? For international use? for domestic carriers?
The phone appears to be locked. I tried putting GSM micro SIM and putting phone in to GSM mode. Got an icon about invalid SIM in notification tray. But no prompt to unlock. Also no menu in settings to unlock via network like my note 3 had. Even worse, no menu to select GSM Network operator in the settings.
leond said:
Has anyone been able to SIM / network unlock Sprint variant of LG G4? For international use? for domestic carriers?
The phone appears to be locked. I tried putting GSM micro SIM and putting phone in to GSM mode. Got an icon about invalid SIM in notification tray. But no prompt to unlock. Also no menu in settings to unlock via network like my note 3 had. Even worse, no menu to select GSM Network operator in the settings.
Click to expand...
Click to collapse
if you are in US i think you can call sprint and they will unlock your phone for free.
elmy2424 said:
if you are in US i think you can call sprint and they will unlock your phone for free.
Click to expand...
Click to collapse
I know , that is the theory, I am curious if anybody actually tried it. I am concerned about the fact that I don't see a menu to select GSM network, which was there in Note 3
it almost looks like the phone can roam on GSM network using Sprint SIM, but all the menus that would allow presence of different SIM where removed.
leond said:
I know , that is the theory, I am curious if anybody actually tried it. I am concerned about the fact that I don't see a menu to select GSM network, which was there in Note 3
it almost looks like the phone can roam on GSM network using Sprint SIM, but all the menus that would allow presence of different SIM where removed.
Click to expand...
Click to collapse
that option is just hidden, when someone get the phone unlocked the option in the menu will be enabled, are you inside USA
I did try a Simple Mobile Sim and it worked just fine. Have you tried any of the movs from Att or Tmobile??
Sent from my SM-G900V using XDA Free mobile app
bump...anyone
Google~Android said:
bump...anyone
Click to expand...
Click to collapse
Friend called Sprint and they unlocked his phone OTA. Now when non-sprint SIM is inserted it no longer complains about invalid SIM, however it will not connect to any networks in USA and still no way to see a list of networks or do a manual selection of network. That menu is still missing. I suspect the phone will now work outside of the USA in automatic network selection mode only, which may not be a good thing some times.
leond said:
Friend called Sprint and they unlocked his phone OTA. Now when non-sprint SIM is inserted it no longer complains about invalid SIM, however it will not connect to any networks in USA and still no way to see a list of networks or do a manual selection of network. That menu is still missing. I suspect the phone will now work outside of the USA in automatic network selection mode only, which may not be a good thing some times.
Click to expand...
Click to collapse
Ive got a really smart friend working on it... Im positive he'll get it done.. Jt matter of patience now...
Google~Android said:
Ive got a really smart friend working on it... Im positive he'll get it done.. Jt matter of patience now...
Click to expand...
Click to collapse
Doesn't matter what you try, you cannot use Sprint's phone on AT&T T-mobile here or any US GSM carriers. When sprint unlocks it for you, then you can use it outside of US on GSM Networks.
chirayu said:
Doesn't matter what you try, you cannot use Sprint's phone on AT&T T-mobile here or any US GSM carriers. When sprint unlocks it for you, then you can use it outside of US on GSM Networks.
Click to expand...
Click to collapse
You must be new here. Domestic gsm has been unlocked on most modern Sprint smart phones. Just in the years I've been with Sprint ive unlocked the Moto Q, G2, S4, and now the G3 for ATT and straight talk. Ive read of several others having the same ability. The s5 can also be unlocked but only one guy knows how but you gotta pay him for it. Kinda ****ty but it actually works.
Sent from my LGLS991 using Tapatalk
just get shortcut master (lite)
click the 3 dots in the upper right, click secret code explorer, click system apps and there are a few ATT hidden menus in there.
now no clue if they do anything.
chirayu said:
Doesn't matter what you try, you cannot use Sprint's phone on AT&T T-mobile here or any US GSM carriers. When sprint unlocks it for you, then you can use it outside of US on GSM Networks.
Click to expand...
Click to collapse
You didnt listen... Sprint phone works 100% for att.. They jt blocks it at the software level... But my friends has unlocked all the newer sprint phones till now.. I dont see why he shudnt be able to do it here
Any chances of unlocking when outside US? I got my phone from Amazon and got it shipped in my country. Tried calling them but they said they only unlock activated phones. Also tried various sites that offer unlock codes but since G4 is not asking for unlock code, they can't do anything.
Do I have any other options?
For those still trying to unlock, I've followed this post for unlocking the G3.
http://forum.xda-developers.com/sprint-lg-g3/general/sim-unlocking-ls990-zv8-t3083567
And I can now accept calls, will try it out some other time if I can get data as well.
Note: Make sure you have the correct permissions on the files that you'll copy.
ijball said:
For those still trying to unlock, I've followed this post for unlocking the G3.
http://forum.xda-developers.com/sprint-lg-g3/general/sim-unlocking-ls990-zv8-t3083567
And I can now accept calls, will try it out some other time if I can get data as well.
Note: Make sure you have the correct permissions on the files that you'll copy.
Click to expand...
Click to collapse
will this work for at&t?? on just international?
Google~Android said:
will this work for at&t?? on just international?
Click to expand...
Click to collapse
I can't confirm, since I don't have access to any AT&T SIM at the moment. If you're already rooted, you can try it out, but make sure to back up the files.
Another update: After updating the APN, my data finally worked. LTE is impossible at the moment since the this doesn't support the LTE bands here in my country
Warning: Don't try to disable auto activation for now. I got the Security Error and still on the process of fixing it.
ijball said:
For those still trying to unlock, I've followed this post for unlocking the G3.
http://forum.xda-developers.com/sprint-lg-g3/general/sim-unlocking-ls990-zv8-t3083567
And I can now accept calls, will try it out some other time if I can get data as well.
Note: Make sure you have the correct permissions on the files that you'll copy.
Click to expand...
Click to collapse
In the us or internationally?
clockcycle said:
In the us or internationally?
Click to expand...
Click to collapse
Internationally.
!!!!! i got it working on at&t!!! calling and sms work..I dont have data so i can't test that...ending a call gives issues as it hangs there for a bit!!!
I have the Sprint LG G4
I also got the unlock code from Sprint. But I can't get the phone to ask for the unlock code. Any hints. Can I force it to ask?
So I tried digging around and haven't found any similar situations. I flashed the ATT firmware to my Unlocked Note 9. I get WiFi calling and Visual Voice Mail. However, under Settings -> Connections -> Mobile Networks there is no options for "Enhanced LTE services" or something like that. I also do not get e VoLTE symbol in the status bar like I've seen on others devices. Am I missing something? Should I try swapping the SIM card? Any insight would be great. Cheers!
Naterade said:
So I tried digging around and haven't found any similar situations. I flashed the ATT firmware to my Unlocked Note 9. I get WiFi calling and Visual Voice Mail. However, under Settings -> Connections -> Mobile Networks there is no options for "Enhanced LTE services" or something like that. I also do not get e VoLTE symbol in the status bar like I've seen on others devices. Am I missing something? Should I try swapping the SIM card? Any insight would be great. Cheers!
Click to expand...
Click to collapse
It's been discussed a lot here. The basic ideal is that AT&T, moreso than any other carrier, likes to restrict features from devices they didn't sell. It's done by the IMEI on the line. Firmware is one part of the equation, as you've discovered, but certain things just will not work without more steps.
Essentially, here's the process: Find a real AT&T device capable of VoLTE. Swap the IMEI of that device onto your line temporarily by placing your SIM card in it. You might also have to call AT&T and have them swap the IMEI on your line while the SIM is in. Have AT&T unblock the VoLTE feature. Put the SIM back in the device you actually want to use.
if I buy an unlocked note 9 from best buy i should not see this problem with my T-Mobile sim card right?
alher591 said:
if I buy an unlocked note 9 from best buy i should not see this problem with my T-Mobile sim card right?
Click to expand...
Click to collapse
T-Mobile doesn't care at all where you bought your device. And most features work on unlocked, too. Missing from U1 on TMB:
- Video calling
- Native digits
If you flash to U, you get literally everything the network can do.
I have a AT&T Note 9 and I don't have the VoLTE listed in that area
It must be on by default (hardcoded) or is listed in another area
Anyone have the lg v40 running on at&t? surprisingly i have no options under mobile networking. I can only enable international data roaming and setup new apn. Usually i'd expect to see settings allowing me to change the bands.
Alibaba0101 said:
Anyone have the lg v40 running on at&t? surprisingly i have no options under mobile networking. I can only enable international data roaming and setup new apn. Usually i'd expect to see settings allowing me to change the bands.
Click to expand...
Click to collapse
Everything is auto- , the phone I have is locked to att and I guess the only way to change that is to unlock the phone.
mtyler7807 said:
Everything is auto- , the phone I have is locked to att and I guess the only way to change that is to unlock the phone.
Click to expand...
Click to collapse
thx, i flashed the unlocked firmware and still the same thing. looks like it keys everything off of the sim.
Alibaba0101 said:
thx, i flashed the unlocked firmware and still the same thing. looks like it keys everything off of the sim.
Click to expand...
Click to collapse
It bounces off 2 things, the phone's props and the network being detected. Using the unlocked does not enable settings if it's not natively supported by the carrier contrary to popular belief. That was true on older versions of android. Newer ones relies on multiple configs to decide what options you get to see or not. In most cases, if the phone model is not what is expected for a particular network, it will default to global roaming mode that has the least set of options. From what I've seen, this comes as a result of carriers requesting to have specifically designated models tailored to their service.
If you are rooted, you can tweak stuff in build.prop to have the phone switch carrier and regional modes.
Alibaba0101 said:
Anyone have the lg v40 running on at&t? surprisingly i have no options under mobile networking. I can only enable international data roaming and setup new apn. Usually i'd expect to see settings allowing me to change the bands.
Click to expand...
Click to collapse
root not needed:
1. for network mode, try dial *#*#4636#*#* and then phone information, this works on my v35 with tmo and att sim, you can also use a 3rd app called "network mode" which is a shortcut of the above, hope that works on v40 too.
2. for band selection, I use 277634#*# on v30(tmo unlocked) for both tmo and att sim; I use 277634#*# on v35 (both att unlock and usa unlock) for tmo sim; I use *#546368#*350# (need to dig into the menu to find band selection) on v35 (both att unlock and usa unlock) for att sim; hope either one of these two works for v40.