[Q] Is possible to load AT&T firmware on a unlocked Verizon LG G4 phone? - G4 Q&A, Help & Troubleshooting

Recently I purchased an unlocked Verizon LG G4 phone for my daughter and I just placed the SIM card, and bring it to an AT&T store where they changed the parameters and it worked. It is receiving calls, SMS and have access to internet but showing an "H" so I believe that is probably a slow internet reception.
Is it possible for me to load the bootloader and firmware to make this unit 100% compatible with the AT&T network?
Thanks!

GandalfPR said:
Recently I purchased an unlocked Verizon LG G4 phone for my daughter and I just placed the SIM card, and bring it to an AT&T store where they changed the parameters and it worked. It is receiving calls, SMS and have access to internet but showing an "H" so I believe that is probably a slow internet reception.
Is it possible for me to load the bootloader and firmware to make this unit 100% compatible with the AT&T network?
Thanks!
Click to expand...
Click to collapse
Unfort no these devices have locked bls and a hard brick will more than likely occure. If its rooted u might try enabling all the lte bands if it supports it.

Related

[Q] Unlocked T Mobile SGS3 would not make calls on Wind

Any help would be very appreciated!
I purchased an unlocked T-Mobile version os SGS3 (T999) for my son, planning him to use it on Wind Mobile's network.
After inserting a SIM card, I can see that the phone was able to identify Wind Network but it would not make any calls.... behaving as it is out of coverage.
When I connected to my Wi-Fi the phone started downloading some T-Mobile update (~36 gb in size).
i have a similar model of SGS3 (T999v) and assumed that these models are interchangeable... Was I wrong?
Is there anything that can be done to fix the reception issue?
Thanks,
2tea22

Verizon G4 to ATT without modding?

I have a unmodded Verizon LG G4 with Marshmallow 6.0. What would happen if I just took the sim card out of my ATT Moto X and put it in the G4?
Would I get anything close to LTE speeds? What wouldn't work?
If I rooted the V-G4, what would that help to do? It it necessary?
thx.
Well the phone is unlocked for GSM, so you should be able to use it on ATT. Just pop the sim and see.
In future, just check this website: www.willmyphonework.net
It works after inputting the ATT codes, but gets the "H" band instead of LTE.

SIM unlocked T-Mobile Z2 Force - on Verizon?

There are a ton of entries on XDA about sim unlocking the T-Mobile and Sprint versions of the Z2 force, but none of them confirm once unlocked if they've used it on Verizon.
T-Mobile's page confirms their version utilizes bands 2,4 and 13 - all of which are Verizon's LTE bands.
Can anyone confirm?
I'm looking to buy this to replace a work phone on Verizon. My personal account is with T-Mobile, so would be very nice if I could just flip sims whenever I'd like. Appreciate in advance the responses!
(unlock T-Mobile bootloader, sim unlock, root and put a custom rom with safety net passes)
then type this on google and try.
Unlock all bands of your Qualcomm device! Use your phone globally! No bs! by olokos
or this one
torial] Unlock ALL bands on xt907 (moto_msm8960) by umar_fia
both links you want are first ones on google
test and report back
unlock band 13 for lte
if possible
unlock band CDMA BC1 (1900 PCS) and CDMA BC0 (800)
if given an option for cdma protocols
activate
cdmaOne 2G
CDMA2000 1xRTT 3G
CDMA2000 1xEV-DO Rel. 0 3G
CDMA2000 1xEV-DO Rev A 3G
If you can't activate the cdma bands, you will have no 3g connection.
Oh if this works I would be so happy to switch back to VZW. Anyone attempted it yet?
I'm interested in knowing if anyone tried this too
I’m too chicken to mess with anything not official from xda on my daily driver. I’m sucking it up and waiting out the period for the device unlock app to ‘officially’ sim unlock and try. When that day comes, I’ll post here.
I think it’s ignorant having to wait for a sim unlock for a phone you bought outright.
joesee said:
I’m too chicken to mess with anything not official from xda on my daily driver. I’m sucking it up and waiting out the period for the device unlock app to ‘officially’ sim unlock and try. When that day comes, I’ll post here.
I think it’s ignorant having to wait for a sim unlock for a phone you bought outright.
Click to expand...
Click to collapse
Eagerly awaiting news on this - why is there a waiting period on the sim unlock? How longs is that period? I'm about to head out to Tmobile store and buy me one too.
Verizon's LTE band 13 is exclusive to the Verizon model unfortunately. I wish it wasn't so you could use a bootloader unlocked Sprint or T-Mobile edition on Verizon. I did that with the Google Pixel - used the universal one on Verizon. I just got used to having an unrooted phone with the z2 Force. I switched to blokada after many years of always using ad away. I think most all ad blockers on unrooted phones are VPN based so it lags WiFi and mobile data a little but that's what you get to work with if you want the best moto phone running on Verizon.
Greefus said:
Verizon's LTE band 13 is exclusive to the Verizon model unfortunately.
Click to expand...
Click to collapse
Could you provide your source of information on that? T-Mobile's listing of the Z2 Force lists band 13 LTE capability, and multiple sources say that the Sprint variant has band 13 too. I am just about to pull the trigger on a Z2 Force variant that is bootloader unlockable, but whichever carrier version I get has to work with Straight Talk Verizon.
I'm seeing the sprint one listed as having band 13 now everywhere actually. My bad. I don't recall seeing that back when i got it and was shopping around. Let me know if the Sprint one works for you on vz because i miss having a a rooted phone.
The only different thing on the US phone's is the oem partition. Everything else hardware and software are very similar to the point I want to say identical. (Obviously, some slight changes in /system and stuff but that's with the territory of using OEM ROMs). I have flashed a T-Mobile flashall and it worked. I flashed back to Sprint shortly after. I did it for science.
So in short, will am unlocked T-mobile Moto Z2 work on the Verizon network with a sim swap? Or does it require a root or the bootloader thing that was mentioned, I haven't done either one as I am content with factory.
So, what's the verdict? Will unlocked T-Mobile Z2 force work with Verizon?
Most likely will not work. T-Mobile variant is GSM and most likely doesn't have the CDMA bands on it or programmed into it. Only thing you can try is flash Verizon firmware and see if it works. 99% chance T-mobile firmware will not work, Verizon firmware has about a 40% chance of working. If you don't have the device, I'd suggest not investing as no one has tried it.
I tried the Verizon flash all on my TMobile z2. Didn't work.lost baseband.
The flash all looked as if everything flashed properly...but when it finished and rebooted it still had tmo splash screen. So I don't know if it really did it.
If it's worth any thing my Verizon Sim in my tmo z2 gets great data...just no calls/messages
I have an unlocked Sprint variant that I flashed to Verizon and use with Straight talk Verizon. The only issue is that so far whenever an update comes in I have to back up all the things I want to save and flash the updated flashall, because the automatic updater just keeps on failing. I don't know if this matters, but I'm bootloader unlocked (had to for sim unlock) but without TWRP or root. It's possible that if I would try relocking the bootloader that the automatic update process would work. I briefly had a Mint sim in there (T-mobile) and everything seemed to work. I didn't really try things out with the Sprint rom, but as I remember everything worked, I just didn't like the icon style plus always having a notification saying something about a non Sprint sim card
zstricky said:
I have an unlocked Sprint variant that I flashed to Verizon and use with Straight talk Verizon. The only issue is that so far whenever an update comes in I have to back up all the things I want to save and flash the updated flashall, because the automatic updater just keeps on failing. I don't know if this matters, but I'm bootloader unlocked (had to for sim unlock) but without TWRP or root. It's possible that if I would try relocking the bootloader that the automatic update process would work. I briefly had a Mint sim in there (T-mobile) and everything seemed to work. I didn't really try things out with the Sprint rom, but as I remember everything worked, I just didn't like the icon style plus always having a notification saying something about a non Sprint sim card
Click to expand...
Click to collapse
Was it officially unlocked or was a modified file flashed to your phone? If you had a third party service unlock, then the hash check for that partition is incorrect and that's why updates fail.
I had a third party unlock it. Actually, it was the guy that people on this forum have talked about.
Will this work on Verizon? My tmo z2 was unlocked by TMobile not a third party
No it doesn't work... You can get data but that's it..
Uzephi said:
The only different thing on the US phone's is the oem partition. Everything else hardware and software are very similar to the point I want to say identical. (Obviously, some slight changes in /system and stuff but that's with the territory of using OEM ROMs). I have flashed a T-Mobile flashall and it worked. I flashed back to Sprint shortly after. I did it for science.
Click to expand...
Click to collapse
Hi- I am wondering about being able to buy a new-in-the-box z2 Force that was originally sold for Sprint, and being able to flash the T-mobile firmware to it for use with them. Is this possible? I have done this for Galaxy S8/S9 phones, but there is a deal right now where I can get this phone with 2 of the mods for dirt cheap, but it won't really matter if I can't do the conversion. Any advice?

LG G4 unlock for use in Mexico

Hello everyone I hope that I get a response I have an LG G4 from Verizon that is fully paid off that I want to send to my sister in Mexico her carrier is AT&T. Now AT&T is a GSM carrier in Mexico emperor what I have found it would be compatible with the network however my question is how can I unlock the LG G4 Sim card so that she can plug in her Sim card. I have found that Verizon says that all of their LTE phones are unlocked but I just want to make sure before I send her a phone that she would not be able to use if I don’t do anything and everything I need to do
Unfortunately, I don't think you will be able to use this phone with an AT&T Mexico SIM Card. If your phone was locked and used on Verizon, it means that is a CDMA device. Thus, it works only with Verizon and doesn't recognize the GSM Technology so it won't accept the AT&T Sim card.
More info on CDMA networks here: https://www.unlockunit.com/blog/cdma-networks/
I think you are better of selling this device in the US and buying an already unlocked GSM model.
myuncutworld said:
Hello everyone I hope that I get a response I have an LG G4 from Verizon that is fully paid off that I want to send to my sister in Mexico her carrier is AT&T. Now AT&T is a GSM carrier in Mexico emperor what I have found it would be compatible with the network however my question is how can I unlock the LG G4 Sim card so that she can plug in her Sim card. I have found that Verizon says that all of their LTE phones are unlocked but I just want to make sure before I send her a phone that she would not be able to use if I don’t do anything and everything I need to do
Click to expand...
Click to collapse
ask verizon to unlock it.
i have tmobile one unlocked from tmobile works great.

LG G710EAW on T-Mobile. Crossflash?

Hello all!
I have an LG G7 from India, model G710EAW. I moved to the US from Canada and the phone isn't entertaining T-Mobile or ATT SIM cards. When I insert them, service works for a little bit and then immediately switches to "Emergency calls only". T-Mobile's website says my phone IMEI is compatible with its service.
The strange thing is that the phone has two SIMs from Canada roaming - one on the T-Mobile network and another on ATT. No issues whatsoever. And when I check the bands in Engineering Mode, I can see one roaming SIM running on LTE Band-4 on T-Mobile. The other roaming SIM is switching between LTE Band-2 and LTE Band-5 on ATT.
T-Mobile uses bands 2,4,5 mainly, and ATT uses 2,4,5 among other bands.This leads me to believe it's some kind of a network restriction preventing my phone from latching onto these networks directly.
I've made tons of calls to T-Mobile and ATT so I'm no longer interested in pursuing them with this.
I'm wondering if cross-flashing a different firmware might help fix this issue. I remember reading on this subreddit that the Google FI firmware may work for T-Mobile bands. I'm not sure I understood that correctly.
Can someone confirm if that's possible? Does this make sense? I'm hesitant to buy a new replacement phone when my G7 works so well.
Thanks!

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