How do you lock a phone that wasn't unlocked properly? (Samsung j7) - Upgrading, Modifying and Unlocking

I recently bought a Samsung j7 that was unlocked internationally. It said it had lte so I thought all was good to go. However after installing the sim I find that I can't use 4g let alone lte, so after a quick call to t mobile find that due to the method that the phone was unlocked I can't access their lte. Is there a way to relock your phone so that you can unlock it the proper way? Thank you in advance.

It does, I spoke with t mobile tech support and they said they support the model but not mine specifically due to how it was unlocked

Related

LG G2 for Sprint gets no love of GSM unlocks

Hello,
So I currently have a Sprint LG G2 that I would like to unlock to be able to use it on AT&T or Tmobile. From what I'v read, even the Verizon G2 comes factory unlocked which Verizon's been known to keep locked in almost all of there phones. I called customer service and told them i would be traveling overseas (they didnt ask what country) and after about 24 hours emailed me asking permission to unlock the device, they told me to go and update me UICC Unlock which gave me a message saying "your SIM is now unlocked" but when I put in a Tmobile sim card to test it, the phone would not recognize it no matter if i changed the settings to gsm/umts or global mode. What do you suggest I do next, I am worried I payed so much for the phone and if 1 or 2 years from now I decide to move carriers or even country that I am visiting to next week and the phone bieng "unlocked" still wont unlock it to be used on local carriers or even abroad, that would really suck. Any suggestions?
sazeem said:
Hello,
So I currently have a Sprint LG G2 that I would like to unlock to be able to use it on AT&T or Tmobile. From what I'v read, even the Verizon G2 comes factory unlocked which Verizon's been known to keep locked in almost all of there phones. I called customer service and told them i would be traveling overseas (they didnt ask what country) and after about 24 hours emailed me asking permission to unlock the device, they told me to go and update me UICC Unlock which gave me a message saying "your SIM is now unlocked" but when I put in a Tmobile sim card to test it, the phone would not recognize it no matter if i changed the settings to gsm/umts or global mode. What do you suggest I do next, I am worried I payed so much for the phone and if 1 or 2 years from now I decide to move carriers or even country that I am visiting to next week and the phone bieng "unlocked" still wont unlock it to be used on local carriers or even abroad, that would really suck. Any suggestions?
Click to expand...
Click to collapse
You really need to do some serious research.
Concerning Verizon, Verizon is required to have the GSM portion of their CDMA/LTE phones factory unlocked due to to a requirement by the FCC when they divested some spectrum a while back.
Now for Sprint, Sprint locks down (or locks out) the GSM portion of their LTE phones for domestic GSM use, so trying to use it with a domestic GSM carrier like AT&T, T-Mobile etc is out of the question by default. They'll unlock it for international GSM use (non U.S GSM carriers). Now there are some fine folks on XDA here that have been able to work around these restrictions on the Galaxy S4, but that's the exception so far.
If like you say, they emailed you that they've unlocked your phone, if you leave the country and insert a foreign SIM, it'll work with that international carrier.
Your right
your absolutly right. Now i need to find out how they did it in s4 because it has to be possible for this phone too then that case
LordLugard said:
You really need to do some serious research.
Concerning Verizon, Verizon is required to have the GSM portion of their CDMA/LTE phones factory unlocked due to to a requirement by the FCC when they divested some spectrum a while back.
Now for Sprint, Sprint locks down (or locks out) the GSM portion of their LTE phones for domestic GSM use, so trying to use it with a domestic GSM carrier like AT&T, T-Mobile etc is out of the question by default. They'll unlock it for international GSM use (non U.S GSM carriers). Now there are some fine folks on XDA here that have been able to work around these restrictions on the Galaxy S4, but that's the exception so far.
If like you say, they emailed you that they've unlocked your phone, if you leave the country and insert a foreign SIM, it'll work with that international carrier.
Click to expand...
Click to collapse
sazeem said:
Hello,
So I currently have a Sprint LG G2 that I would like to unlock to be able to use it on AT&T or Tmobile. From what I'v read, even the Verizon G2 comes factory unlocked which Verizon's been known to keep locked in almost all of there phones. I called customer service and told them i would be traveling overseas (they didnt ask what country) and after about 24 hours emailed me asking permission to unlock the device, they told me to go and update me UICC Unlock which gave me a message saying "your SIM is now unlocked" but when I put in a Tmobile sim card to test it, the phone would not recognize it no matter if i changed the settings to gsm/umts or global mode. What do you suggest I do next, I am worried I payed so much for the phone and if 1 or 2 years from now I decide to move carriers or even country that I am visiting to next week and the phone bieng "unlocked" still wont unlock it to be used on local carriers or even abroad, that would really suck. Any suggestions?
Click to expand...
Click to collapse
Hmmm, this is interesting, I am having a similar dilema, as far as I was aware, I thought that unlocking would be done on the cosumer end, they would give you a code, then you'd input that code in, I've just never heard of them unlocking it on their own. I got the LG G2 LS980 when I was in the US for a semester and moved to Brazil just a week ago, I haven't tried to fully make it work, but from the LS980 manual, it says that there is not even a sim lock on the phone(i'd put up a picture, but I have no idea how). And when I try to put in an old local(brazilian) SIM card, it doesn't ask for a unlock code, it just says no SIM card - Emergency calls only. I'm still researching it, but if you find anything, just post it here so I can keep up Thanks.
LordLugard said:
You really need to do some serious research.
Concerning Verizon, Verizon is required to have the GSM portion of their CDMA/LTE phones factory unlocked due to to a requirement by the FCC when they divested some spectrum a while back.
Now for Sprint, Sprint locks down (or locks out) the GSM portion of their LTE phones for domestic GSM use, so trying to use it with a domestic GSM carrier like AT&T, T-Mobile etc is out of the question by default. They'll unlock it for international GSM use (non U.S GSM carriers). Now there are some fine folks on XDA here that have been able to work around these restrictions on the Galaxy S4, but that's the exception so far.
If like you say, they emailed you that they've unlocked your phone, if you leave the country and insert a foreign SIM, it'll work with that international carrier.
Click to expand...
Click to collapse
Yeah I will definitely have to wait for a workaround for the sprint LG G2 as I am not a sprint customer. I think the S4 and the HTC both have workarounds, but as far as I'm aware, these workarounds apply mostly for international use only (which is exactly what I need) meaning that ATT/TMOB is probably not going to work, or might have to wait a couple months until there is a lot more people working on the sprint version, the thing is, the phone wasn't released that long ago, so support in the forums is still low.
Back during the photon days they were able to achieve domestic gsm use by flashing the radio from the Japanese version of the photon. Well maybe not directly. It may have been a modified Japanese radio but it worked!! My daughters mother still uses the photon 4g as an att go phone. Would something like that still be possible for our devices? I know a lot of people lost interest in it because after the photon we got the photon q which had an embedded Sim. Even then people were able to take the phone apart and solder a Sim tray in and unlock it for other domestic carriers.
Sent from my LG-LS980 using Tapatalk
tsdeaton said:
Back during the photon days they were able to achieve domestic gsm use by flashing the radio from the Japanese version of the photon. Well maybe not directly. It may have been a modified Japanese radio but it worked!! My daughters mother still uses the photon 4g as an att go phone. Would something like that still be possible for our devices? I know a lot of people lost interest in it because after the photon we got the photon q which had an embedded Sim. Even then people were able to take the phone apart and solder a Sim tray in and unlock it for other domestic carriers.
Sent from my LG-LS980 using Tapatalk
Click to expand...
Click to collapse
But I think first of all it needs to be unlocked for GSM or GSM part of the phone should be unlocked for any other thing to try.
st_7 said:
But I think first of all it needs to be unlocked for GSM or GSM part of the phone should be unlocked for any other thing to try.
Click to expand...
Click to collapse
As long as some foreign carrier has their g2 unlocked for international gsm use then it wouldn't matter right? With the KDDI radio on the photon we weren't able to use sprint service on it after flashing. Basically as if the phone thought it was the Japanese version of the photon.
Sent from my LG-LS980 using Tapatalk
tsdeaton said:
As long as some foreign carrier has their g2 unlocked for international gsm use then it wouldn't matter right? With the KDDI radio on the photon we weren't able to use sprint service on it after flashing. Basically as if the phone thought it was the Japanese version of the photon.
Sent from my LG-LS980 using Tapatalk
Click to expand...
Click to collapse
This would be awesome if it worked, I'm still hopeful someone will find a way, because I don't use sprint anymore and I have since moved to brazil. Thank god this phone is awesome enough to not be useless with only wifi, but I'm still hopeful someone will find a way for me to catch Brazil's GSM signal, as the phone does have the right GSM bands for it.
Just like the HTC one, it took months for even Sprint themselves to figure out how they would unlock the HTC, what I want to know if there is anyone that has actually called Sprint and asked for the unlock, and confirmed it to be working.
Can the sprint lg g2 be unlocked for any carrier.
Im trying to change from sprint contract to straighttalk. Is there a way to get my LG G2 unlocked so I can switch?
Hathoid said:
Yeah I will definitely have to wait for a workaround for the sprint LG G2 as I am not a sprint customer. I think the S4 and the HTC both have workarounds, but as far as I'm aware, these workarounds apply mostly for international use only (which is exactly what I need) meaning that ATT/TMOB is probably not going to work, or might have to wait a couple months until there is a lot more people working on the sprint version, the thing is, the phone wasn't released that long ago, so support in the forums is still low.
Click to expand...
Click to collapse
I unlocked my GS2 Skyrocket recently as I'm about to sell it and pick up a G2 next week. I popped in a T-Mobile SIM and verified that it worked. However, I very seriously doubt the method I used would work on the G2. Here's the thread though:
unlock free proceed at your own risk!
Domestic sims are too small
sazeem said:
Hello,
So I currently have a Sprint LG G2 that I would like to unlock to be able to use it on AT&T or Tmobile. From what I'v read, even the Verizon G2 comes factory unlocked which Verizon's been known to keep locked in almost all of there phones. I called customer service and told them i would be traveling overseas (they didnt ask what country) and after about 24 hours emailed me asking permission to unlock the device, they told me to go and update me UICC Unlock which gave me a message saying "your SIM is now unlocked" but when I put in a Tmobile sim card to test it, the phone would not recognize it no matter if i changed the settings to gsm/umts or global mode. What do you suggest I do next, I am worried I payed so much for the phone and if 1 or 2 years from now I decide to move carriers or even country that I am visiting to next week and the phone bieng "unlocked" still wont unlock it to be used on local carriers or even abroad, that would really suck. Any suggestions?
Click to expand...
Click to collapse
I called the Sprint international department and they explained the situation somewhat.
Domestic sim cards such as on tmobile and att have too little memory to support the cdma function of the lg g2, so you will get an "invalid sim" message. The size of the sim must be at least 128k to work on the g2. Maybe there is a way to get domestic network data on a larger sim card.
Hope this helps.
severly said:
I called the Sprint international department and they explained the situation somewhat.
Domestic sim cards such as on tmobile and att have too little memory to support the cdma function of the lg g2, so you will get an "invalid sim" message. The size of the sim must be at least 128k to work on the g2. Maybe there is a way to get domestic network data on a larger sim card.
Hope this helps.
Click to expand...
Click to collapse
while the size thing may be true.. this is not why youre getting an invalid sim error. the invalid sim error comes from when u use ANY sim thats not Sprint. After you get Sprint to OTA SIM unlock your phone.. this invalid sim error goes away... gsm will work for intl.. and possibly domestic.. tho sprint may also have a block on domestic only.. after the intl unlock. if the phone is unlocked thru sprint and you pop a tmo sim in and get no signal(but no invalid sim error)... then that means the phone is unlocked properly but domestic is blocked.
this is usually my area of interest.. i did both the htc one and gs4 unlocks but I do not own a g2 unfortunately.
autoprime said:
while the size thing may be true.. this is not why youre getting an invalid sim error. the invalid sim error comes from when u use ANY sim thats not Sprint. After you get Sprint to OTA SIM unlock your phone.. this invalid sim error goes away... gsm will work for intl.. and possibly domestic.. tho sprint may also have a block on domestic only.. after the intl unlock. if the phone is unlocked thru sprint and you pop a tmo sim in and get no signal(but no invalid sim error)... then that means the phone is unlocked properly but domestic is blocked.
this is usually my area of interest.. i did both the htc one and gs4 unlocks but I do not own a g2 unfortunately.
Click to expand...
Click to collapse
So are you saying if you did have a Sprint G2 you would be able to find a way to unlock it?
How the heck do they do this?
How can they unlock the phone for international SIMs and prevent them from working on local SIMs? Can't be some band that they check. Otherwise, it would not work on an international SIM using that band. Hardcode something in the kernel or the OS? In which would a custom ROM and/or kernel work? Can anyone point me to some links or posts that discuss this?
os2baba said:
How can they unlock the phone for international SIMs and prevent them from working on local SIMs? Can't be some band that they check. Otherwise, it would not work on an international SIM using that band. Hardcode something in the kernel or the OS? In which would a custom ROM and/or kernel work? Can anyone point me to some links or posts that discuss this?
Click to expand...
Click to collapse
I'm also interested in this as I have a LS980 and I am currently in Brazil, sprint has done nothing yet as far as unlocking it.(even for actualy customers, I have not seen anyone that actually has this thing unlocked). I popped in a Claro(local provider) SIM card, and the phone says "No SIM card- Emergency calls only", I've tried multiple SIMs to see if it was a problem with the actual SIM, but all of them read the same thing, while inside the phone I get a notification saying "Restricted Access Changed - Voice Service is Blocked". So it knows there is a SIM card in there, it's just blocking it.
Cleanser2012 said:
So are you saying if you did have a Sprint G2 you would be able to find a way to unlock it?
Click to expand...
Click to collapse
cant be 100% certain... but I'd say there'd be a good chance. Unlocked another Sprint phone this week.
Hopefully I'll get a G2 eventually.
autoprime said:
cant be 100% certain... but I'd say there'd be a good chance. Unlocked another Sprint phone this week.
Hopefully I'll get a G2 eventually.
Click to expand...
Click to collapse
I'll pray every day that you do get one dood It would be a life saver because as of now I have a mini tablet G2 in brazil
autoprime said:
while the size thing may be true.. this is not why youre getting an invalid sim error. the invalid sim error comes from when u use ANY sim thats not Sprint. After you get Sprint to OTA SIM unlock your phone.. this invalid sim error goes away... gsm will work for intl.. and possibly domestic.. tho sprint may also have a block on domestic only.. after the intl unlock. if the phone is unlocked thru sprint and you pop a tmo sim in and get no signal(but no invalid sim error)... then that means the phone is unlocked properly but domestic is blocked.
this is usually my area of interest.. i did both the htc one and gs4 unlocks but I do not own a g2 unfortunately.
Click to expand...
Click to collapse
Will give 75 $ if you can buy a used set. That's my contribution. For the G2 unlock.
Sent from my GT-I9300 using Tapatalk

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.

SM-N976V CSC Change to work with Verizon MVNO?

I purchased a Verizon Galaxy Note 10+ 5g from ebay last year to use for Total Wireless. Well the phone wasnt compatible with Total Wireless at the time and I had to switch to Verizon prepaid. Now the phone is compatible but I cant add APN's to the device because Verizon has greyed out the option. I bought a US Mobile Sim card so I can switch all of our phones over since it is cheaper and is a Verizon MVNO, but I cant get everything to work on my note 10+ 5g. I was able to download an app that let me add APN's and the LTE comes up but now I cant get VoLTE to work. Its turned on but when I make a phone call, it switches to 1x. This is a problem since Verizon is doing away with their CDMA Network. I have spoken to Verizon, US Mobile, and Samsung with no help. My other Note 8 will work just fine when I put the US Mobile Sim card in and my Samsung a71 5g wont work at all and wont let me add APN's even with the app.
I have been doing research and found out about SamKEY and bought some credits to change the CSC from VZW to XAA. I was in the process and it gave a warning about locking the SEC so I decided to do more research before I screwed something up.
The phone is unlocked but for some reason, Verizon phones have these issues with a Verizon MVNO. I can add the TMO sim card from US Mobile and it will allow me to edit the APN's without an issue but I get zero coverage here so I cant use it. So how can I change the CSC to get VoLTE working on a Verizon MVNO? Or can I even change the CSC on this phone? I am so sick of Verizon phones but Im afraid to buy an unlocked phone since It doesnt support all of Verizon's bands.
Jmp7624 said:
I purchased a Verizon Galaxy Note 10+ 5g from ebay last year to use for Total Wireless. Well the phone wasnt compatible with Total Wireless at the time and I had to switch to Verizon prepaid. Now the phone is compatible but I cant add APN's to the device because Verizon has greyed out the option. I bought a US Mobile Sim card so I can switch all of our phones over since it is cheaper and is a Verizon MVNO, but I cant get everything to work on my note 10+ 5g. I was able to download an app that let me add APN's and the LTE comes up but now I cant get VoLTE to work. Its turned on but when I make a phone call, it switches to 1x. This is a problem since Verizon is doing away with their CDMA Network. I have spoken to Verizon, US Mobile, and Samsung with no help. My other Note 8 will work just fine when I put the US Mobile Sim card in and my Samsung a71 5g wont work at all and wont let me add APN's even with the app.
I have been doing research and found out about SamKEY and bought some credits to change the CSC from VZW to XAA. I was in the process and it gave a warning about locking the SEC so I decided to do more research before I screwed something up.
The phone is unlocked but for some reason, Verizon phones have these issues with a Verizon MVNO. I can add the TMO sim card from US Mobile and it will allow me to edit the APN's without an issue but I get zero coverage here so I cant use it. So how can I change the CSC to get VoLTE working on a Verizon MVNO? Or can I even change the CSC on this phone? I am so sick of Verizon phones but Im afraid to buy an unlocked phone since It doesnt support all of Verizon's bands.
Click to expand...
Click to collapse
IDK about unlocking an US device. I prefer unlocked devices.
US unlocked versions of Samsung devices are called "U1". It's part of the model number/name.
E.g. SM-G981U is the US locked Samsung Galaxy S20 5g (like for Verizon), and the SM-G981U1 is the US unlocked version of the same device.
It_ler said:
IDK about unlocking an US device. I prefer unlocked devices.
US unlocked versions of Samsung devices are called "U1". It's part of the model number/name.
E.g. SM-G981U is the US locked Samsung Galaxy S20 5g (like for Verizon), and the SM-G981U1 is the US unlocked version of the same device.
Click to expand...
Click to collapse
Thanks for the reply. I ended up selling the phone and buying a Google Pixel 4 XL. Saved some money and its unlocked. Ill never buy another Verizon Edition of the phone again.

Is Sprint LG G8 factory unlocked for overseas GSM networks?

I am in the market for this phone and what I see most often is the Sprint variant. Some say unlocked, while some do not say. Are all Sprint LG G8 unlocked for overseas GSM networks? I am in Nigeria and have bought unlocked phones which worked fine here. I have also bought some that I unlocked myself and they also worked well her. The issue is that I have not seen any unlock service for the Sprint variant. There are services that unlock the Sprint G7 remotely, but none for the G8 yet. What should I do in this case? If the Sprint G8 is GSM unlocked for overseas use then I am fine with it. If not, and there is no way to unlock it yet, then I'm in a pickle. Your advice please.
Thanks.
Im currently in the caribbean using a sprint unlocked lg g8 from the seller yyywireless in ebay , the phone works great! although it hass two compromises
1- The apn settings are a little weird to configure , you have to reset the apn settings until you get them working
2-The phone is stuck in android 9 , april 2019 security patch , some people were able to update , but I cant
With that said , it shoud work in theory , try to look up the bands that your cellphone companies use and check if the sprint version has them.
Good luck!

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