Develop Bugs

[Q] SIM Unlock/CyanogenMod 10.1.2

Hello,
I will be traveling soon overseas and I was hoping to swap out my SIM card for one to use locally. I already have the unlock code from AT&T and was wondering if that would actually work or not. By what I have read, I have my doubts.
I am running CM 10.1.2 (Android 4.2.2). I have heard that the LTE phones (which this is being on AT&T's 4G network) running CM will not let you enter the unlock codes once you've inserted a new SIM.
I don't know if entering *#*#4636#*#* and switching my network type to something besides LTE/GSM auto (PRL) would help or not. If somebody could give me some kind of definitive answer about this, I'd appreciate it so I don't waste my time trying to pick up the SIM card at the airport.
Thanks in advance.

I'm subscribing, as I'd like to know, too. I unlocked when I was using a stock touchwiz rom, so this wasn't an issue, but it's good info to know.

logistician said:
Hello,
I will be traveling soon overseas and I was hoping to swap out my SIM card for one to use locally. I already have the unlock code from AT&T and was wondering if that would actually work or not. By what I have read, I have my doubts.
I am running CM 10.1.2 (Android 4.2.2). I have heard that the LTE phones (which this is being on AT&T's 4G network) running CM will not let you enter the unlock codes once you've inserted a new SIM.
I don't know if entering *#*#4636#*#* and switching my network type to something besides LTE/GSM auto (PRL) would help or not. If somebody could give me some kind of definitive answer about this, I'd appreciate it so I don't waste my time trying to pick up the SIM card at the airport.
Thanks in advance.
Click to expand...
Click to collapse
My brother is currently trying to Unlock my old GS3.. Have you had any luck with this? It has CM10 and he wants it on T-Mobile. Would flashing a stock ROM solve all of this?

Try This... did it to my S3 & S4
IceTwig said:
I'm also on MF3 w/ SafeStrap using STOCK ROM (SGH-i337) and this "Region Lock" by chainfire unlocked my SIM. I can now use a T-Mobile SIM and its recognized fine.
Region Lock Away
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I497 using xda app-developers app

[Q] Isis Wallet AT&T -> T-mobile

I own the note 3 from AT&T and I'm currently on T-Mobile. Isis mobile wallet works only if the carrier and the phone are from the same carrier. Can someone advice on how I can get Isis wallet working? Will replacing the build.prop with the T-Mobile's build.prop help?
I thought of a few things and will update this thread accordingly.

As far as I know the build.prop mod doesn't work anymore but that's on Google Wallet, I think there's a thread in T Mobile Note3 Android development on trying to get Google Wallet to work they might have some info on Isis for you

[Q] Tap to pay / softcard

Has anyone been able to use NFC for tap to pay? I'm on t-mobile. I installed Softcard but on opening the app it says I need a different SIM. I got a new SIM at a t-mobile store and was assured by tech support by phone that all nano SIMs are Advanced SIMs and support Softcard. But I still get the same message with the new SIM. Anyone gotten this to work?

VoLTE on AT&T

Does this work? Does anyone know how to enable it?

Great thread. I wonder if we can enable it because it does not work with any custom roms

It's been confirmed working on the pure nexus ROM. Check the development thread

It has not been confirmed working on att. I follow that thread closely. It's is working on Verizon and Tmobile.
I am running pure nexus with att and no volte

stu5797 said:
It has not been confirmed working on att. I follow that thread closely. It's is working on Verizon and Tmobile.
I am running pure nexus with att and no volte
Click to expand...
Click to collapse
My apologies. I must've read it wrong then

Stu, do you have a VoLTE enabled SIM in your 5X? You have to have an account in the HSS and TAS to get an IMS registration...

I really don't know. Is volte working for you on att and the nexus 5? I don't think it can work but I hope I am wrong

Did you just pull the SIM from an existing phone? If so, was it a VoLTE phone? AT&T will only provision the SIM/Account for VoLTE if you have an approved device.
And no, I have not gotten my 5X to do VoLTE yet....working on it.

My friend just got Nexus 6P + new AT&T sim card. We made couple of calls and there is no VoLTE option in the cellular settings, as I have with my 5X on T-Mobile.

Remember that any VoLTE network is *completely* different than the existing CDMA/GSM/UMTS networks that the providers have. VoLTE utilizes an IMS or USP core that the phone has to register on to get VoLTE calls to work. The SIM information has to be defined within this IMS core, otherwise you will only get legacy services.
AT&T will currently only define a SIM for VoLTE is you have a certified device that they sell. But I already have VoLTE phones and am trying to use their SIMs without success. I think the 5X software may not be allowing the IMS registration. If you are on T-Mob I would call them up and see if they will provision your SIM for IMS....they don't seem to care about what phone you use.

LG G710ULM UNSUPPORTED VoLTE ?!? (Straight-Talk US - T-Mobile network)

*********UPDATE********** I bought a new sim from straight talk and VOLTE works now! (GSM compatible Straight Talk Sim card) My old sim was from 2014, so it wasn't VOLTE compatible.
I have an ebay zombie LG G710ULM flashed to latest Google Fi Android 9 software, I received an email from Straight Talk (Wal-Mart US cell phone service reseller) telling me that my LG G7 does not support VoLTE and my phone will be unable to receive calls in January 2021.
-Using a network info app, the app is telling me it is connected to T-Mobile towers (so I have a Straight Talk T-Mobile compatible SIM)
-I can't find any options to enable VoLTE in settings, and wifi calling is erroring out
I was wondering if there are ways to get VoLTE and Wifi Calling working (Straight Talk supports it, but not my current ROM/SIM).
I can switch to the following sims supported by Straight Talk.
-AT&T Compatible Sim
-Verizon Compatible Sim? If my phone supports CDMA bands
OTHERWISE MOST OF US WILL HAVE A PAPERWEIGHT IN 2021!!!!!!!!!

Same problem
I'm having the same problem. Any progress on this?

I'd like to know this too. Surprised there is no traffic here with all the knowledgeable people on this forum.
G710EAW here. BTW There was an Android 10 update just two hours ago from Android 9. Someone with an 'EM' phone in another thread said VOWifi is "working now" but how do others know if it's working when January 1st comes around?

Falkentyne said:
I'd like to know this too. Surprised there is no traffic here with all the knowledgeable people on this forum.
G710EAW here. BTW There was an Android 10 update just two hours ago from Android 9. Someone with an 'EM' phone in another thread said VOWifi is "working now" but how do others know if it's working when January 1st comes around?
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Click to collapse
If you guys have cross flashed roms, then volte will not work. It doesnt work for any of us who have crossflashed. Whichever model.
You need to be on original software. Looks like some licensing thing that volte requires. They need to provision volte for all the phones. Sounds like they are not interested to provision it for g7. Odd that even EAW model which has original firmware, they sent that mail too....
Sad/Odd to see your carriers are suddenly changing to only Volte.

Is there a way to put it back to original software? I actually don't need it crossflashed to anything because it's a Verizon originally and I would like to use it on that network. Or does it not work that way?

Turnhoo said:
Is there a way to put it back to original software? I actually don't need it crossflashed to anything because it's a Verizon originally and I would like to use it on that network. Or does it not work that way?
Click to expand...
Click to collapse
Main issue is that your carriers dont want to provision volte for your G7s. So no guarantee if cross flashing back to original will work.
There is crossflashing guide in guides section with which you can go back to stock firmware. Do this at your own risk.
In our country we have a volte carrier called Jio. They provide an app called jiocall. Using that app you could use their service even if your phone is not volte capable. You will have to see if there are such apps for your carrier. Thats the only non technical, simpler solution.

I have some information that might make all of you guys happy.
I was told by Safelink Wireless that VOTLE is a function of BOTH the phone *AND* the sim card.
Basically, if the phone itself is VOLTE compatible but the sim card is not, then the phone will be reported on their system as not compatible, and will ask you to upgrade your phone.
However if a VOLTE compatible SIM is inserted, if the phone does in fact support VOLTE, it will then work. That's because it's provisioned on the carrier via the sim card itself.
If you purchased a sim via the "Buy your own sim" package, e.g. online or from Best Buy, etc, awhile ago, then that sim is not compatible. You simply need to call Tracphone/Safelink and ask to buy a VOLTE compatible SIM (which costs 99 cents). Then when you get it, call their tech department to have them transfer the phone service and phone number to the new SIM.
You can dial the phone's service menu and go to the VOLTE/GPRI menu and if the options are there, then the phone supports it.

What's the correct service menu number for our phones?

Falkentyne said:
I have some information that might make all of you guys happy.
I was told by Safelink Wireless that VOTLE is a function of BOTH the phone *AND* the sim card.
Basically, if the phone itself is VOLTE compatible but the sim card is not, then the phone will be reported on their system as not compatible, and will ask you to upgrade your phone.
However if a VOLTE compatible SIM is inserted, if the phone does in fact support VOLTE, it will then work. That's because it's provisioned on the carrier via the sim card itself.
If you purchased a sim via the "Buy your own sim" package, e.g. online or from Best Buy, etc, awhile ago, then that sim is not compatible. You simply need to call Tracphone/Safelink and ask to buy a VOLTE compatible SIM (which costs 99 cents). Then when you get it, call their tech department to have them transfer the phone service and phone number to the new SIM.
You can dial the phone's service menu and go to the VOLTE/GPRI menu and if the options are there, then the phone supports it.
Click to expand...
Click to collapse
Update, I recently bought a new sim and I have VOLTE right now on ULM android 9 latest security fix LG G7 image, running on Straight Talk.

took a while to understand lgup but my 710 oulm had a type oreo that the guy said couldnt be but i crossed flashed it to 10 i dont see the rom anymore and i hope i put it on another drive it was a canadian rom for android 10 works great otherwise im looking to get volte active in the *#*#4636#*#* phone menu you can see "provision for the setting under the radio on off but its a grey area the buttons dont work could be good could be bad its definately part of 10 but ?? grey areas preferred network could be sketchy to play with the phone initially on transition had incredible link up speed now its giving me a pain because assume i played with the connection preferences tab and its a registration error like dum just use the assigned sim guys and stop trying to mac or identify with every device anyway its the registration of a telephone number robo heads