US unlocked LG V405QA7 volte and wifi calling - LG V40 Questions & Answers

Hello guys having an us unlocked variant is frustrating as At&t and verizon does not support volte and wifi calling on devices that are not in there brand. So with many googling I found out T-mobile supports unlocked phones for volte and wifi calling and so I switched and yes they do support volte and wifi calling manufacture unlocked devices!
I know it depends on the phone as well but if you google then you will see that at&t and verizon only allows those features there branded devices.

Does this mean you were able to flash the T-mobile rom on to the us unlocked phone successfully?
Thanks

No, I don't believe it means that! T-mo is very problematic in that regard as they use a separate and unique signature key for their roms. I don't believe you can mix them and there's a very high risk of bricking your device if you try.
The other reason I don't believe it means that is I have an AT&T phone, flashed to us open version rom, and it has both wifi calling and volte using a t-mo mvno (mint mobile). So, no, don't assume the op has flashed t-mo firmware to achieve this, it's not necessary and may well end with a brick.
cheers

screwball8 said:
Does this mean you were able to flash the T-mobile rom on to the us unlocked phone successfully?
Thanks
Click to expand...
Click to collapse
No, I did not flash it. T-Mobile was the only one that supported unlocked devices for volte and wificalling activating them through the sim card network, So you just need a t-mobile sim card activated.
I went carrier shopping and it seems T-Mobile is the only carrier around to support activating those features for unlocked devices and I was happy as I wont be missing anymore calls and appointments.

i got verizon and it says i have hd voice which is verizon's volte service and I'm on this unlocked phone as well

roy331 said:
i got verizon and it says i have hd voice which is verizon's volte service and I'm on this unlocked phone as well
Click to expand...
Click to collapse
The unlocked phone should be the 5QA7 as the model. But dang guess Verizon and T-mobile support those features for unlocked phones. A rep in Verizon told me they dont support unlocked phones when I asked them about volte/wifi calling. I only know that AT&T are greedy company as they only support there branded phones.

Related

Question about Using an Unlocked Sprint LG G6 on Tmobile

Hello XDA,
Do we know if we are able to flash the firmware of another carriers to the LG G6? I remember we were able to do that with the S6/S7 so that Wifi Calling and VoLTE would be fixed for users on Tmobile using an unlocked phone (Sprint unlocked phone etc). Since they had the same physical hardware.
I'll be getting a Sprint LG G6 from my job but I have tmobile, I can get it unlocked thats not a problem, but I need Wifi Calling to work. Has anyone tried to flash another carriers firmware on their LG G6 // do we know if they are the same hardware wise? Thanks in advance guys!
Is Sprint using GSM now?
skywalkr2 said:
Is Sprint using GSM now?
Click to expand...
Click to collapse
The devices have been GSM capable since the S3. NVTOOLs usually has some flags you can flip to enable the bands/radio. Of course it needs to be clean ESN with Sprint, and internationally unlocked from Sprint.
Does any one know what i need to do to get my sprint lg g6 working on other carriers sprint says its unlocked but when i put at&t sim card in it does not register
Bigken5508 said:
Does any one know what i need to do to get my sprint lg g6 working on other carriers sprint says its unlocked but when i put at&t sim card in it does not register
Click to expand...
Click to collapse
Did Sprint just say it's unlocked or did they give you a code? From what I know they are suppose to give an unlock codes for Android devices and for iPhones they just unlock them. Your phone is suppose to prompt you when you put a different carrier SIM in and once you out that code in your permanent unlocked.
Can anyone second this?
I wouldn't trust Sprint. They need to give you the unlock code. I found someone to pay to do it. There are very few.

Can I upload a custom ROM

Hi,
I am using samsung Galaxy S6 ATT version with the following software version:
Android Version 6.0.1
Android Security Patch September 1,2016
Baseband Version G920AUCS5DPI1
Build number MMB29K.G920AUCS5DPI1
The phone is sim unlocked but I need help with rooting / unlocking the bootloader. On checking this forum I did not find any way to do this on my. So I was just wondering if there is anything else (such as installing any other ROM) that I can do with this phone.
Since the contract on my phone has expired I tried using this phone with another carrier and it does not seem to be working (tried with metroPCS) the phone does not show any other network operators except ATT/T-mobile and Verizon and on trying to connect to T-mobile it fails to connect (metro PCS uses T-mobile line)
After spending few hours with an account rep from metro he felt the phone may not be compatible. So at this point I am just trying to figure out if there is anything I can do with this device.
Sorry for the long winded post but I just hate how these carriers tell you that after the contract you own the device but their own software updates mess up any chance of using your own device as you want.
Appreciate any insight or links to help me figure out if anything can be down to get rid of the ATT rom.
Thanks,
Matt
You can use it for a wifi hotspot or spare android device. no roms, no custom recovery, no bootloader unlock, no real root option. sadly. this device thanks to att gets no love.
Sent from my SM-N900V using Tapatalk
This is very sad. what is the point of paying the bloated ATT bill and getting the phone sim unlocked after 2 years of payments. Wish someone could sue these big carriers with their dealing with locking devices that are not really theirs to lock after a period of time.
Planet Z !! said:
You can use it for a wifi hotspot or spare android device. no roms, no custom recovery, no bootloader unlock, no real root option. sadly. this device thanks to att gets no love.
Sent from my SM-N900V using Tapatalk
Click to expand...
Click to collapse
Correct that there is no bootloader unlock, so no custom ROMs.
However, Sim unlocking should get you functionality on MetroPCS, among other carriers. According to willmyphonework, you should be able to get on MetroPCS 3g on 1900mhz band, and LTE band 4. Whether or not towers on those frequencies exist in your area is another matter. Did you verify the device was using the correct APN data when you tried non-ATT Sims?
Hi dandrumheller, sorry for the late response. I did verify that the APN was setup correctly even set it up manually with the metropcs customer service but the phone still does not show metropcs as an available network. It does show ATT/T-Mobile/Verizon as the available options and does not work on choosing T-Mobile (Metropcs uses t-mobile network). When I put the sim in my other phones they all work fine and show 4g lte availability from metropcs in my area. so I thought my only option is to unlock the bootloader and try my own rom instead of the good for nothing ATT rom.
dandrumheller said:
Correct that there is no bootloader unlock, so no custom ROMs.
However, Sim unlocking should get you functionality on MetroPCS, among other carriers. According to willmyphonework, you should be able to get on MetroPCS 3g on 1900mhz band, and LTE band 4. Whether or not towers on those frequencies exist in your area is another matter. Did you verify the device was using the correct APN data when you tried non-ATT Sims?
Click to expand...
Click to collapse

Is anyone using an AT&T branded Note 8 on Sprint?

I've been through hell and high water trying to get this phone to function on Sprint but the guys at the local corporate store and technical team (via phone support) are telling me it cannot be done. Is anyone in the same predicament as me or has a functioning AT&T Note 8 activated on the Sprint network? I'm using a BYOD SIM and have also flashed my device with N950U1 unlocked firmware.
As AT&T is a GSM network and Sprint is CDMA, I don't think this is possible...
EDIT
Sorry, I guess times have changed. It seems possible now, once the Note8 is unlocked from AT&T.
Sent from my SM-G935U using XDA-Developers Legacy app
gc86 said:
I've been through hell and high water trying to get this phone to function on Sprint but the guys at the local corporate store and technical team (via phone support) are telling me it cannot be done. Is anyone in the same predicament as me or has a functioning AT&T Note 8 activated on the Sprint network? I'm using a BYOD SIM and have also flashed my device with N950U1 unlocked firmware.
Click to expand...
Click to collapse
Carrier switching is very much possible with the US variants, so if you flash the Sprint firmware (N950U, not U1) and the Sprint CSC as well, in theory it should work just fine. If there are IMEI complications about not being in 'Sprints system', that's another issue, but hardware wise it should be 100% compatible with Sprint's network.
murtaza02 said:
Carrier switching is very much possible with the US variants, so if you flash the Sprint firmware (N950U, not U1) and the Sprint CSC as well, in theory it should work just fine. If there are IMEI complications about not being in 'Sprints system', that's another issue, but hardware wise it should be 100% compatible with Sprint's network.
Click to expand...
Click to collapse
This is precisely what I kept telling the guys at the store, that all of the USDM Note 8's are hardware identical. My only theory at this point is that the device isn't Sprint BYOD eligible because it has an outstanding balance on the AT&T side and therefore isn't "officially unlocked".

Unlocked Note 9 SM-N960U1 Doesn't work on any network

I purchased an unlocked Note 9 and all the networks tell me it won't work on any of theirs. AT&T, US Cellular, Verizon, Net10 all say no. I put my AT&T sim in and it works with low signal. Why would it not work? How do I figure out where this phone originated? I suspect Sprint because any phone from Sprint only works on Sprint.
gonka95 said:
I purchased an unlocked Note 9 and all the networks tell me it won't work on any of theirs. AT&T, US Cellular, Verizon, Net10 all say no. I put my AT&T sim in and it works with low signal. Why would it not work? How do I figure out where this phone originated? I suspect Sprint because any phone from Sprint only works on Sprint.
Click to expand...
Click to collapse
Did you try a T-Mobile SIM card?
Sent from my SM-N960U1 using Tapatalk
Where did you buy it?
Have you Googled the model number?
gonka95 said:
I purchased an unlocked Note 9 and all the networks tell me it won't work on any of theirs. AT&T, US Cellular, Verizon, Net10 all say no. I put my AT&T sim in and it works with low signal. Why would it not work? How do I figure out where this phone originated? I suspect Sprint because any phone from Sprint only works on Sprint.
Click to expand...
Click to collapse
Go to this site and run the IMEI. It will tell you if it's actually a U1 model or if it's a carrier model.
http://imeipro.info/samsung_imei_check.html
Whichever it is, you can just flash the ATT firmware, and it will work perfect on ATT. All the N960U and U1s are identical. Just different firmware.
Mr. Orange 645 said:
Go to this site and run the IMEI. It will tell you if it's actually a U1 model or if it's a carrier model.
http://imeipro.info/samsung_imei_check.html
Whichever it is, you can just flash the ATT firmware, and it will work perfect on ATT. All the N960U and U1s are identical. Just different firmware.
Click to expand...
Click to collapse
Sprint, that's why I'm having issues with it. I purchased via Amazon. I managed to get it working on Net10 wireless CDMA, so it'll work. Had to activate with my S8+ though. Thanks for the link, that helped!
gonka95 said:
Sprint, that's why I'm having issues with it. I purchased via Amazon. I managed to get it working on Net10 wireless CDMA, so it'll work. Had to activate with my S8+ though. Thanks for the link, that helped!
Click to expand...
Click to collapse
Well, if you want it to work on ATT, just flash the ATT firmware. Not sure why it won't work with the U1 firmware though.
Mr. Orange 645 said:
Well, if you want it to work on ATT, just flash the ATT firmware. Not sure why it won't work with the U1 firmware though.
Click to expand...
Click to collapse
Does it need root? And it has the SM-N960U1UEU1ARJ5 Baseband Version? Thanks in advanced!
gonka95 said:
Does it need root? And it has the SM-N960U1UEU1ARJ5 Baseband Version? Thanks in advanced!
Click to expand...
Click to collapse
Well you CAN'T root it, but no. You don't need root to flash official firmware with ODIN.
gonka95 said:
I purchased an unlocked Note 9 and all the networks tell me it won't work on any of theirs. AT&T, US Cellular, Verizon, Net10 all say no. I put my AT&T sim in and it works with low signal. Why would it not work? How do I figure out where this phone originated? I suspect Sprint because any phone from Sprint only works on Sprint.
Click to expand...
Click to collapse
So if you got it with flash for sprint then maybe you need flash what was originally on this model?
I have the very same model and I just put in my LTE Verizon SIM and it worked right away.
This model is a boot locked, carrier unlocked, world band snapdragon version, that was never originally touched by any carrier.
I.E. No carrier bloat ware. SM-N960U1
rusty.gh said:
So if you got it with flash for sprint then maybe you need flash what was originally on this model?
I have the very same model and I just put in my LTE Verizon SIM and it worked right away.
This model is a boot locked, carrier unlocked, world band snapdragon version, that was never originally touched by any carrier.
I.E. No carrier bloat ware. SM-N960U1
Click to expand...
Click to collapse
I flashed AT&T but cannot get wifi calling. I ordered an AT&T one through Samsung last night. I'll return this one when I get it. The back of this phone says it's an N960U.
I forgot how crappy carriers are. AT&T unlocked my iPhone but no longer recognizes it. So, I can't get wifi calling to work before switching the sim.
Thanks a bunch to everyone for their input and workarounds! Have been out of the loop for a while.
gonka95 said:
I flashed AT&T but cannot get wifi calling. I ordered an AT&T one through Samsung last night. I'll return this one when I get it. The back of this phone says it's an N960U.
I forgot how crappy carriers are. AT&T unlocked my iPhone but no longer recognizes it. So, I can't get wifi calling to work before switching the sim.
Thanks a bunch to everyone for their input and workarounds! Have been out of the loop for a while.
Click to expand...
Click to collapse
Oh, my bad, yeah the "U" models do say you might lose Wifi calling. Good it worked out for you!
I would be disappointed if I needed Wifi calling, I use the cell line 24/7 here in the US everywhere I go.
I feel like Wifi calling is just giving my carrier a break.
gonka95 said:
I flashed AT&T but cannot get wifi calling. I ordered an AT&T one through Samsung last night. I'll return this one when I get it. The back of this phone says it's an N960U.
I forgot how crappy carriers are. AT&T unlocked my iPhone but no longer recognizes it. So, I can't get wifi calling to work before switching the sim.
Thanks a bunch to everyone for their input and workarounds! Have been out of the loop for a while.
Click to expand...
Click to collapse
There's actually a way to get WiFi calling on it working again. Look through the carrier switching threads in the Note 8 forums.
It's why I hate ATT and love T-Mobile. Everything works out of the box on T-Mo.
rusty.gh said:
Oh, my bad, yeah the "U" models do say you might lose Wifi calling. Good it worked out for you!
I would be disappointed if I needed Wifi calling, I use the cell line 24/7 here in the US everywhere I go.
I feel like Wifi calling is just giving my carrier a break.
Click to expand...
Click to collapse
Well to be fair there will be places where signal will be weak or non and then you will be the one loosing.
They don't look at break is just way for the customers to get better signal every where they go or inside whatever tipe of building...
gonka95 said:
I purchased an unlocked Note 9 and all the networks tell me it won't work on any of theirs. AT&T, US Cellular, Verizon, Net10 all say no. I put my AT&T sim in and it works with low signal. Why would it not work? How do I figure out where this phone originated? I suspect Sprint because any phone from Sprint only works on Sprint.
Click to expand...
Click to collapse
Mr. Orange 645 said:
Go to this site and run the IMEI. It will tell you if it's actually a U1 model or if it's a carrier model.
http://imeipro.info/samsung_imei_check.html
Whichever it is, you can just flash the ATT firmware, and it will work perfect on ATT. All the N960U and U1s are identical. Just different firmware.
Click to expand...
Click to collapse
I also purchased an unlocked Note 9 on ebay. In "about phone", the model number is listed as SM-N960U1. On the back of the phone, it's SM-N960U.
The sites that tell you the model with the IMEI number are right, it's a Sprint phone. Samsung customer support said the same thing. However, the Sprint phone and the US unlocked phone share the same FCC ID.
Does that mean, they are the same radio hardware? Is it just the firmware that makes the difference in band capability? If you flashed the US unlocked version of baseband, would it be identical to the US unlocked version? I just want to make double sure!
mraeryceos said:
I also purchased an unlocked Note 9 on ebay. In "about phone", the model number is listed as SM-N960U1. On the back of the phone, it's SM-N960U.
The sites that tell you the model with the IMEI number are right, it's a Sprint phone. Samsung customer support said the same thing. However, the Sprint phone and the US unlocked phone share the same FCC ID.
Does that mean, they are the same radio hardware? Is it just the firmware that makes the difference in band capability? If you flashed the US unlocked version of baseband, would it be identical to the US unlocked version? I just want to make double sure!
Click to expand...
Click to collapse
Go back and read my post you quoted. It answers the question you just asked.
Mr. Orange 645 said:
Go back and read my post you quoted. It answers the question you just asked.
Click to expand...
Click to collapse
He thanked you so I'm thinking he saw it.????

Samsung S10 on AT&T wifi calling and VoLTE

I have a Canadian S10 (973W) which I cross-flashed it with AT&T firmware with odin-patch. The CSC is for AT&T and I am trying to enable the wifi calling.
It seems that sometimes it works but most of the times it does not. I have the APP0008 error. Also when I have the error it seems I can not check the call waiting as well.
Do you know if AT&T fully allows non AT&T phones to be registered for wifi calling? I know some phones work but some other don't even though the software is for AT&T
It is my understanding that it has to be AT&T branded for them to allow VOLTE, WiFi Calling ....
It may be based on the IMEI numbers being restricted.
Now, if you flash the firmware for AT&T it should work but the forums are full of posts that indicate it does not seem to hold. Sorry and I hope and I am wrong ...
What gets me is these features work fine on Unlocked Models with TMo and Verizon... Very frustrating
Sent from my SM-G973U1 using Tapatalk
U and U1 models are firmware compatible with each other as the "U" stands for Universal. If you have a U or U1 model you can flash any U firmware (Sprint, Verizon, etc) or the U1 unlocked firmware and everything will work given you have the right SIM card for that specific carrier.

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