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Getting Cell Service with NO SIM! And some other guys number ! Help

I just bought a phone the guy who made no mention of the fact that it was rooted when I bought it. What is worse is he mentioned that his GF worked for Verizon, which did not seem to mean much at the time. Knowing that here is what i'm dealing with.
I was in a rush when I checked out the phone as I had to meet another person to pick one up for my wife as well. It's the sch-i575 in white 16gb. After having a minute to look at the phone it turns out he had Paranoid Android flashed and the phone was rooted. CRAP! Not what I was looking for and he was not upfront about it. The incredibly strange thing was that with NO SIMCARD the phone was getting 3g signal! I spent all night trying to unroot \ undo what he did. I managed to use ODIN to get back to the stock rom although I think it's still a rooted one since I still have the super user app. I got a sim card from verizon but since it was rooted I did not bring the phone in and when I tried to activate later it would not activate. My wife's by the way is working flawless and when I put my sim in her phone it works fine as well. I had to put the sim in my wife's phone and it activated there. Here is the crazy thing, with or with out a simcard the phone makes calls and has 3g internet only but when I make a call it uses HIS NUMBER!! I'm not sure what the hell to do, what could have he done? Any ideas? Please all help is appreciated! I did not think this was even possible for the phone to function w/o a sim. I'm worried about taking it in to Verizon because of the funkiness. Ty again for any insight...

tekkski said:
I just bought a phone the guy who made no mention of the fact that it was rooted when I bought it. What is worse is he mentioned that his GF worked for Verizon, which did not seem to mean much at the time. Knowing that here is what i'm dealing with.
I was in a rush when I checked out the phone as I had to meet another person to pick one up for my wife as well. It's the sch-i575 in white 16gb. After having a minute to look at the phone it turns out he had Paranoid Android flashed and the phone was rooted. CRAP! Not what I was looking for and he was not upfront about it. The incredibly strange thing was that with NO SIMCARD the phone was getting 3g signal! I spent all night trying to unroot \ undo what he did. I managed to use ODIN to get back to the stock rom although I think it's still a rooted one since I still have the super user app. I got a sim card from verizon but since it was rooted I did not bring the phone in and when I tried to activate later it would not activate. My wife's by the way is working flawless and when I put my sim in her phone it works fine as well. I had to put the sim in my wife's phone and it activated there. Here is the crazy thing, with or with out a simcard the phone makes calls and has 3g internet only but when I make a call it uses HIS NUMBER!! I'm not sure what the hell to do, what could have he done? Any ideas? Please all help is appreciated! I did not think this was even possible for the phone to function w/o a sim. I'm worried about taking it in to Verizon because of the funkiness. Ty again for any insight...
Click to expand...
Click to collapse
It sounds like you didnt flash the proper stock image. I would start with that and report back.
http://forum.xda-developers.com/showthread.php?t=1755386

tekkski said:
I just bought a phone the guy who made no mention of the fact that it was rooted when I bought it. What is worse is he mentioned that his GF worked for Verizon, which did not seem to mean much at the time. Knowing that here is what i'm dealing with.
I was in a rush when I checked out the phone as I had to meet another person to pick one up for my wife as well. It's the sch-i575 in white 16gb. After having a minute to look at the phone it turns out he had Paranoid Android flashed and the phone was rooted. CRAP! Not what I was looking for and he was not upfront about it. The incredibly strange thing was that with NO SIMCARD the phone was getting 3g signal! I spent all night trying to unroot \ undo what he did. I managed to use ODIN to get back to the stock rom although I think it's still a rooted one since I still have the super user app. I got a sim card from verizon but since it was rooted I did not bring the phone in and when I tried to activate later it would not activate. My wife's by the way is working flawless and when I put my sim in her phone it works fine as well. I had to put the sim in my wife's phone and it activated there. Here is the crazy thing, with or with out a simcard the phone makes calls and has 3g internet only but when I make a call it uses HIS NUMBER!! I'm not sure what the hell to do, what could have he done? Any ideas? Please all help is appreciated! I did not think this was even possible for the phone to function w/o a sim. I'm worried about taking it in to Verizon because of the funkiness. Ty again for any insight...
Click to expand...
Click to collapse
I thought the I575 was an old slide phone. So A. your in the wrong section of the forum since this is Verizon's S3 or B. you mentioned the wrong device number? I saw phones before working and running on networks without sim-cards but that was years ago. If it is an S3, you sure it's a Verizon device? Also since you see 3g....can you browse around in the browser or make a phone call?

ctsr
galchristian said:
I thought the I575 was an old slide phone. So A. your in the wrong section of the forum since this is Verizon's S3 or B. you mentioned the wrong device number? I saw phones before working and running on networks without sim-cards but that was years ago. If it is an S3, you sure it's a Verizon device? Also since you see 3g....can you browse around in the browser or make a phone call?
Click to expand...
Click to collapse
Yes, it's a galaxy s3 16gb in white. It looks like currently I was using the tar66 using ODIN. I'm reverting back to the bone stock one now. As far as the models go isn't the SCH-I575 the Verizon version of the S3?
I'm waiting on the stock unrooted rom to take through ODIN and will report back. Thank you for taking the time to try and help.
Ohh, yes the internet works and when I make phone calls with or with out my sim in it makes calls successfully but the other guys number shows up. What the heck did this guy do to the phone!

Our model is the SCH-i535
Dont thank/like/rep my posts or ill report you.

DROID3R said:
Our model is the SCH-i535
Dont thank/like/rep my posts or ill report you.
Click to expand...
Click to collapse
You are obviously absolutley correct. I'm frantically trying to figure this out. I have flashed the stock rom and don't have super user anymore. The problem persists with the guys number.
Could he have flashed a custom kernel and modem or does reverting back using the stock rom cover all that ?

tekkski said:
You are obviously absolutley correct. I'm frantically trying to figure this out. I have flashed the stock rom and don't have super user anymore. The problem persists with the guys number.
Could he have flashed a custom kernel and modem or does reverting back using the stock rom cover all that ?
Click to expand...
Click to collapse
The one i linked covers all that and completely erases all data on the phone. Did you insert your sim after the stock flash?

toy028 said:
The one i linked covers all that and completely erases all data on the phone. Did you insert your sim after the stock flash?
Click to expand...
Click to collapse
I just double checked and I had the I535VRLAG1 version, yours is the I535VRALF2 in the link you posted trying this now. The crazy thing is that it even says that the sim is activated with MY number! but the calls are still comming from him. I even tried wiping the device and clearing the cache. I also tried to JUST flash the modem with VRLG1.modem.tar.md5 and nothing :\. Waiting on the file from your link to download and will try that.
Is it possible that this is being caused by something on Verizon's end? The phone ( with out the SIM ) is registered to him somehow? I know this is not normal but because his GF worked for Verizon could they have done something funky?

Yeah its definitely possible its from something she did to the phone but most likely nothing from Verizon's end. Does the IMEI number under status match the IMEI number under the battery?

toy028 said:
Yeah its definitely possible its from something she did to the phone but most likely nothing from Verizon's end. Does the IMEI number under status match the IMEI number under the battery?
Click to expand...
Click to collapse
Yes IMEI is the same in the OS as behind the battery.
The curious thing is that on the same screen in the OS where you find the IMEI there is also a field called Network and it says " Unknown"
It also has things like:
Eri v : 5
Mobile network type : EvDo-rev.a:8
The thing I keep coming back to is how is it possible for this phone to make calls\ have data with out a sim?
Starting to really think I got cheated

Cheated? Sounds like you have free Verizon service.
Roll with it. If you really want a bill you can have mine...
Sent from my SGH-I535 using Tapatalk 2

tekkski said:
Yes IMEI is the same in the OS as behind the battery.
The curious thing is that on the same screen in the OS where you find the IMEI there is also a field called Network and it says " Unknown"
It also has things like:
Eri v : 5
Mobile network type : EvDo-rev.a:8
The thing I keep coming back to is how is it possible for this phone to make calls\ have data with out a sim?
Starting to really think I got cheated
Click to expand...
Click to collapse
Very strange that's for sure. Try re-provisioning the device *2767*3855#

toy028 said:
Very strange that's for sure. Try re-provisioning the device *2767*3855#
Click to expand...
Click to collapse
Just did and the same thing happened. I went to the Verizon store and the guy there had no idea and got me in touch with tech support from the store. They were dumbfounded and flat out said that what is happening is impossible. "It's impossible to make\receive phone calls with out a sim unless they are emergency" I harped on the fact that I am making phone calls as one of their other customers and that this is a big deal. In the end since I had the insurance and extended warranty they will ship me a new phone.

tekkski said:
Just did and the same thing happened. I went to the Verizon store and the guy there had no idea and got me in touch with tech support from the store. They were dumbfounded and flat out said that what is happening is impossible. "It's impossible to make\receive phone calls with out a sim unless they are emergency" I harped on the fact that I am making phone calls as one of their other customers and that this is a big deal. In the end since I had the insurance and extended warranty they will ship me a new phone.
Click to expand...
Click to collapse
Wow... you gave away free service
Dont thank/like/rep my posts or ill report you.

Yeah i agree. Screw it. Just forward your number to the new one until everyone gets used to the new number. Free service equals win baby win
Sent from my SCH-I535 using xda app-developers app

sgs3 is eating SIM cards

How many people have had to get a new SIM card to get their phone working properly?
How many different reasons have a new SIM card been needed for?
I've heard of a lot of people needing a new SIM card to receive the OTA.
I had to get a new SIM card as my phone would no longer switch to 4G.
Is there a hardware or software issue with this phone causing SIM cards to malfunction?
Is there anyone who's needed a SIM card replaced that has Not flashed or rooted their phone in anyway?
thanks,

I needed one to be able to check for updates.
Sent from my SCH-I535 using xda premium

Ryno77 said:
I needed one to be able to check for updates.
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Do you root and flash roms or other things on your phone?
I'd like to narrow down if this only happens on phones where that is done.
and then to nail down what we are flashing that is wrecking these sim cards if that is the common factor.

I had to get one once I went back to stock to receive ota. I do run a custom rom normally.
Sent from my iPad using Tapatalk HD

Mine is fine, but the other three in my household after receiving g7 can no longer check for updates. I wonder if Samsungs "no sim fix" somehow killed them. All three are unrooted, and never have been.
I have not yet replaced their sims.

Odin'd back to stock to receive updates, had to get a new sim in order for it to work. I run custom as well. I think it has something to do with how the sims are identified on the LTE network since Sprint and At&t don't have this issue.
Sent from my SCH-I535 using xda app-developers app

rfranken said:
Do you root and flash roms or other things on your phone?
I'd like to narrow down if this only happens on phones where that is done.
and then to nail down what we are flashing that is wrecking these sim cards if that is the common factor.
Click to expand...
Click to collapse
Never rooted or ran a custom rom...100% stock. Someone mentioned that the update may have fried the sim cards....that's my thought as well.

Ryno77 said:
Never rooted or ran a custom rom...100% stock. Someone mentioned that the update may have fried the sim cards....that's my thought as well.
Click to expand...
Click to collapse
Problem with that theory though is lots of people had to get a new sim card just to be able to take the ota.
Good to know this isn't necessarily cause from flashing roms and what not.

I also had the problem checking for OTA updates. I received the update just fine and then had the problem. I went to the Verizon store and the switched the SIM card out and problem was resolved.
Sent from my SCH-I535 using xda app-developers app

rfranken said:
How many people have had to get a new SIM card to get their phone working properly?
How many different reasons have a new SIM card been needed for?
I've heard of a lot of people needing a new SIM card to receive the OTA.
I had to get a new SIM card as my phone would no longer switch to 4G.
Is there a hardware or software issue with this phone causing SIM cards to malfunction?
Is there anyone who's needed a SIM card replaced that has Not flashed or rooted their phone in anyway?
thanks,
Click to expand...
Click to collapse
Both my brother and I had to get new sim cards for 4g due to the phone warping our cards.

I had to get a new sim card when I upgraded from the galaxy nexus to the gs3. I believe it was because I had done a manual prl update when it was in the nexus. it seemed to work just fine in that phone but once I put it in the gs3 I couldn't get 4g unless I switched to 4g only.

I was on the latest OTA and I hadn't checked for an OTA since Oct. 3rd and tried yesterday and got a error. Went to Verizon and he said he didn't know if any issue with SIM cards being fried with GS3. I'm all stock and he argued that a new SIM wouldn't fix. I got him to do it anyways and now checking for updates works again. He still doesn't think it was a SIM card. But i beg to differ.

cvbcbcmv said:
Had to pay 10 dollars and 40 minutes of my time at the corporate store for them to tell me they couldn't give me one, had to buy one, but it fixed my OTA issue. I'm gonna rub it in the "it appears you have done this thing called rooting your phone" guy's face. No s***. I flash a new rom every hour...
Click to expand...
Click to collapse
hahah
thats good.
Those punks should have giving it to you for free. They have to know by now that the sgs3 is eating sim cards.

Nexus 5 no calls in or out. BUT! LTE working.

Bought a nexus 5 with a broken screen for 30 bucks. With that in mind, swapped the screen, battery door and radio module. Before doing the prior tried several roms, flashed a number of modems and it didn't fixed. The issue is the following, when I try to make a call, it just stays in the “calling" screen for about 20 seconds or so and and it just quits. Incoming calls go straight to voice mail. Currently running tesla rom 6.0.1. What info i can provide could be potentially useful to fix this problem?

Does the same thing on stock rom?

audit13 said:
Does the same thing on stock rom?
Click to expand...
Click to collapse
Yes, yes it does. Downgraded all the way to 4.4.4 with a factory image, hoping that it could solve the issue. But it didn't.

Strange. The sim works properly in another phone? Will the data work with the phone in 3g mode?

The SIM is new, and it doesn't work in 3g mode

audit13 said:
Strange. The sim works properly in another phone? Will the data work with the phone in 3g mode?
Click to expand...
Click to collapse
The SIM is new, and it doesn't work in 3g mode

There are 2 versions of the n5: 820 and 821.
Do both phones have the same model #?

audit13 said:
There are 2 versions of the n5: 820 and 821.
Do both phones have the same model #?
Click to expand...
Click to collapse
Bootloader says D820

Both phones are "D820"? Were you able to confirm that calling worked on the phone you bought before making the swap?

audit13 said:
Both phones are "D820"? Were you able to confirm that calling worked on the phone you bought before making the swap?
Click to expand...
Click to collapse
The calling did not worked before the swap, and the new module was bought on eBay. I must say that the LTE and wi-fi signal improved significantly with the replacement part.

3G doesn't work for data or calls? If not, sounds like there may be a hardware defect.

invalid card

can some one please help me....i purchased an unlocked former sprint lg g flex 2 from ebay to use with my gsm sim card.
I have used the phone for 10 days without any problem but from nowwhere today it just showed invalid card.
when i reinsert the sim,it detects the sim for about 10 min and then brings a pop up on the screen saying "the phone ll reboot until you insert a valid sim card"then it reboots and stays on invalid sim.
Tried a different sim it also works for roughly 5 min and then does the same thing.
I have tried hard reset,factory reset,rebooting it and everything that i found on google but nothing works,still stack on "INVALID CARD"
Any help please i ll appreciate!

mackn said:
can some one please help me....i purchased an unlocked former sprint lg g flex 2 from ebay to use with my gsm sim card.
I have used the phone for 10 days without any problem but from nowwhere today it just showed invalid card.
when i reinsert the sim,it detects the sim for about 10 min and then brings a pop up on the screen saying "the phone ll reboot until you insert a valid sim card"then it reboots and stays on invalid sim.
Tried a different sim it also works for roughly 5 min and then does the same thing.
I have tried hard reset,factory reset,rebooting it and everything that i found on google but nothing works,still stack on "INVALID CARD"
Any help please i ll appreciate!
Click to expand...
Click to collapse
Best thing to do is return it. Never buy a sprint device for use on GSM carriers. Only buy a sprint device if you intend on using it on Sprint.
Sent from my iPhone using Tapatalk

hyelton said:
Best thing to do is return it. Never buy a sprint device for use on GSM carriers. Only buy a sprint device if you intend on using it on Sprint.
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
unfortunately am not in the US currently and it can be difficult to return it.
Can i root it?Can it get back to normal? so desperate right now.

mackn said:
unfortunately am not in the US currently and it can be difficult to return it.
Can i root it?Can it get back to normal? so desperate right now.
Click to expand...
Click to collapse
No clue. Getting it to work can be difficult or could be easy. But it's just not a reliable device to use on GSM carriers.
Did you make sure network mode is set to GSM/WCDMA/LTE?
If so your best bet is to check out this thread not sure if it still applies https://forum.xda-developers.com/g-flex2/general/sprint-g-flex-2ls996-gsm-domestic-t3122813

mackn said:
can some one please help me....i purchased an unlocked former sprint lg g flex 2 from ebay to use with my gsm sim card.
I have used the phone for 10 days without any problem but from nowwhere today it just showed invalid card.
when i reinsert the sim,it detects the sim for about 10 min and then brings a pop up on the screen saying "the phone ll reboot until you insert a valid sim card"then it reboots and stays on invalid sim.
Tried a different sim it also works for roughly 5 min and then does the same thing.
I have tried hard reset,factory reset,rebooting it and everything that i found on google but nothing works,still stack on "INVALID CARD"
Any help please i ll appreciate!
Click to expand...
Click to collapse
I think it can be rooted on lollipop. There is a thread somewhere.
Sent from my LG-H955 using Tapatalk

hyelton said:
No clue. Getting it to work can be difficult or could be easy. But it's just not a reliable device to use on GSM carriers.
Did you make sure network mode is set to GSM/WCDMA/LTE?
If so your best bet is to check out this thread not sure if it still applies https://forum.xda-developers.com/g-flex2/general/sprint-g-flex-2ls996-gsm-domestic-t3122813
Click to expand...
Click to collapse
hi,
i have just discovered that my phone was already rooted by the seller after i ran root checker.
do you think if i unroot it and root it again would solve the problem that am having.

mackn said:
hi,
i have just discovered that my phone was already rooted by the seller after i ran root checker.
do you think if i unroot it and root it again would solve the problem that am having.
Click to expand...
Click to collapse
Just unrooting wouldn't solve the issue. The device was most likely rooted with changes to make it work with a gsm carrier. That phone in its stock state won't work on any other carrier at all besides sprint.
Sent from my iPhone using Tapatalk

Hi hyelton
I want to unroot my phone it has stock rom of 5.1.1 zvb.can i use zv5 or what would you recommend.i just want to take it back to stock so that i can unlocked it with unlock code for gsm use.
Maybe it solve the problem am having.
Am a newbie to this rooting thing so i just want to do the right thing.
Device:LS996 from sprint.
Problem facing:service disable,invalid card

mackn said:
Hi hyelton
I want to unroot my phone it has stock rom of 5.1.1 zvb.can i use zv5 or what would you recommend.i just want to take it back to stock so that i can unlocked it with unlock code for gsm use.
Maybe it solve the problem am having.
Am a newbie to this rooting thing so i just want to do the right thing.
Device:LS996 from sprint.
Problem facing:service disable,invalid card
Click to expand...
Click to collapse
You should be able to since it's updating. But updating will actually make it to where you won't ever be able to use it.
You have more of a chance getting it working with a GSM carrier while rooted than not.
The issue your facing is not a problem, it's supposed to say that when inserting a non Sprint sim in the sprint device.
Remember that model has to be tampered with to make it work on a GSM carrier. It's not supposed to work on a non sprint carrier without things being changed.
Sent from my iPhone using Tapatalk

Broken Antenna
I've had my LG G Flex 2 for a little over a year and this happened to me.
SOLUTION: The antenna is most likely broken and needs to be replaced. The lady at sprint said it is common with this phone so I'll try to figure out how to do that.

cmosk7100 said:
I've had my LG G Flex 2 for a little over a year and this happened to me.
SOLUTION: The antenna is most likely broken and needs to be replaced. The lady at sprint said it is common with this phone so I'll try to figure out how to do that.
Click to expand...
Click to collapse
Yeah but your using the device on sprint? These users are not. They're using it on a GSM network outside of the US this issue is over the software not hardware.
Sent from my iPhone using Tapatalk

Invalid card
Thanks guys,i appreciate all your inputs.i have since returned this phone to the seller for replacement.I hope I ll not face this problem on the next one.

mackn said:
Thanks guys,i appreciate all your inputs.i have since returned this phone to the seller for replacement.I hope I ll not face this problem on the next one.
Click to expand...
Click to collapse
Hopefully you don't get another Sprint device. Or it will most likely happen again.
Sent from my iPhone using Tapatalk

Invalid card
I ll ask him to send me something from at&t
Since he has it in his eBay store.

"No Service" but SIMs detected and work on other phones

Essentially, my phone started reading "No service" even though I am at home where I normally get full bars. I chalked it up to a Visible issue, but the problem persisted even after several days and multiple restarts, so I put the SIM in my iPhone and it works great...
I then put a MInt Mobile SIM in the G7 Power and again "No service" but the SIM is detected because when one is not inserted it says No SIM but that goes away when I insert one, and I can read the ICCID in About Phone.
I tried a factory reset and even reflashed the most recent stock firmware using the the LMSA tool and no dice. Huge issue and don't even know why considering that my phone has always been stock. Could I actually be dealing with a hardware issue?

og1502 said:
Essentially, my phone started reading "No service" even though I was at home where I normally get full bars. I chalked it up to a Visible issue, but the problem persisted even after several days and multiple restarts, so I put the SIM in my iPhone and it works great...
I then put a MInt Mobile SIM in the G7 Power and again "No service" but the SIM is detected because when one is not inserted it says No SIM but that goes away when I insert one, and I can read the ICCID in About Phone.
I tried a factory reset and even reflashed the most recent stock firmware using the the LMSA tool and no dice. Huge issue and don't even know why considering that my phone has always been stock. Could I actually be dealing with a hardware issue?
Click to expand...
Click to collapse
It looks like your G7 power is locked ....so " No service" as expected...
If it is unlocked , using manually network searching to see if it sees any network around you....
Or type "*#06" , if it still has IMEI.....
Sent from my LG-LS997 using Tapatalk

cgigate said:
It looks like your G7 power is locked ....so " No service" as expected...
If it is unlocked , using manually network searching to see if it sees any network around you....
Or type "*#06" , if it still has IMEI.....
Sent from my LG-LS997 using Tapatalk
Click to expand...
Click to collapse
I don't think my phone is locked, as it was working fine on Visible for multiple weeks. Also, it's the Amazon edition and those are SIM unlocked. Do you mean some other type of lock?
Manually searching for a network results in it endlessly search for a network but never finding/listing any. Yes, *#06# results in the IMEI, MEID (HEX and DEC), and serial number being displayed.
I honestly think it's a hardware issue because I did flash the stock firmware using LMSA tool and that didn't help, but I do find that very hard to believe so I'm wondering if anyone has any other suggestions...

og1502 said:
I don't think my phone is locked, as it was working fine on Visible for multiple weeks. Also, it's the Amazon edition and those are SIM unlocked. Do you mean some other type of lock?
Manually searching for a network results in it endlessly search for a network but never finding/listing any. Yes, *#06# results in the IMEI, MEID (HEX and DEC), and serial number being displayed.
I honestly think it's a hardware issue because I did flash the stock firmware using LMSA tool and that didn't help, but I do find that very hard to believe so I'm wondering if anyone has any other suggestions...
Click to expand...
Click to collapse
Ok, if the manual search not able to find any network... The baseband chip/circuit has issue
Sent from my LG-LS997 using Tapatalk

cgigate said:
Ok, if the manual search not able to find any network... The baseband chip/circuit has issue
Sent from my LG-LS997 using Tapatalk
Click to expand...
Click to collapse
Okay. Is there some test I can run to confirm?

og1502 said:
Okay. Is there some test I can run to confirm?
Click to expand...
Click to collapse
What firm ware did u flash

og1502 said:
I don't think my phone is locked, as it was working fine on Visible for multiple weeks. Also, it's the Amazon edition and those are SIM unlocked. Do you mean some other type of lock?
Manually searching for a network results in it endlessly search for a network but never finding/listing any. Yes, *#06# results in the IMEI, MEID (HEX and DEC), and serial number being displayed.
I honestly think it's a hardware issue because I did flash the stock firmware using LMSA tool and that didn't help, but I do find that very hard to believe so I'm wondering if anyone has any other suggestions...
Click to expand...
Click to collapse
I used Visible for about a year,
I stopped getting a signal at home, no network connection.
Figured out that I could get a signal in some other areas if I drove around.
Visible uses Verizon network and is owned by Verizon.
I had used Verizon for almost 20 years before switching so I have a good idea where it should work.
I suspect that Verizon has changed some frequencies from 4g to 5g or something.
I contacted Visible several times even got a new sim but just couldn't get a dependable connection.
So I switched to Pure Talk USA a AT&T mvno.
My issue seems a little different than yours but it could be related.
Sent from my ocean using XDA Labs

og1502 said:
Essentially, my phone started reading "No service" even though I was at home where I normally get full bars. I chalked it up to a Visible issue, but the problem persisted even after several days and multiple restarts, so I put the SIM in my iPhone and it works great...
I then put a MInt Mobile SIM in the G7 Power and again "No service" but the SIM is detected because when one is not inserted it says No SIM but that goes away when I insert one, and I can read the ICCID in About Phone.
I tried a factory reset and even reflashed the most recent stock firmware using the the LMSA tool and no dice. Huge issue and don't even know why considering that my phone has always been stock. Could I actually be dealing with a hardware issue?
Click to expand...
Click to collapse
in the same boat currently with my g7 except i have service and use Verizon, but its extremely inconsistent. I also think its a hardware issue, but it only happened after I flashed a custom rom (Resurrection Remix). I don't think it's the custom rom though, as I went back to stock entirely and still the same issue. Haven't even owned my phone for over a year and its doing this.

What carrier u using now if ur on verizon that's the problem it don't like custom roms and which roms

roadkill42 said:
What firm ware did u flash
Click to expand...
Click to collapse
I used LMSA to flash the latest stock firmware package: OCEAN_AMZ_QPO30.85_23_cid50_subsidy_DEFAULT_regulatory_DEFAULT_CFC.xml.zip
While I've flashed custom ROMs on tens of phones in the past, this is an Amazon version of the phone with a locked bootloader so it's always been stock.
sd_shadow said:
I used Visible for about a year,
I stopped getting a signal at home, no network connection.
Figured out that I could get a signal in some other areas if I drove around.
Visible uses Verizon network and is owned by Verizon.
I had used Verizon for almost 20 years before switching so I have a good idea where it should work.
I suspect that Verizon has changed some frequencies from 4g to 5g or something.
I contacted Visible several times even got a new sim but just couldn't get a dependable connection.
So I switched to Pure Talk USA a AT&T mvno.
My issue seems a little different than yours but it could be related.
Sent from my ocean using XDA Labs
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Click to collapse
This is very interesting, but I actually noticed this issue when I was about 35 miles from home, and persisted throughout my trip home - so I don't think that's the problem for me. I appreciate your response though!
Malfrosty said:
in the same boat currently with my g7 except i have service and use Verizon, but its extremely inconsistent. I also think its a hardware issue, but it only happened after I flashed a custom rom (Resurrection Remix). I don't think it's the custom rom though, as I went back to stock entirely and still the same issue. Haven't even owned my phone for over a year and its doing this.
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Click to collapse
I suppose it could be related. Mine phone worked continuously then stopped. Nothing intermittent like what you are describing.
roadkill42 said:
What carrier u using now if ur on verizon that's the problem it don't like custom roms and which roms
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Click to collapse
I'm still using Visible, but on an old iPhone 6s Plus. I have a Mint Mobile SIM in the G7 Power for now - also says "No service" though I also have a perpetual unread voicemail notification with this Mint SIM inserted.

og1502 said:
I used LMSA to flash the latest stock firmware package: OCEAN_AMZ_QPO30.85_23_cid50_subsidy_DEFAULT_regulatory_DEFAULT_CFC.xml.zip
While I've flashed custom ROMs on tens of phones in the past, this is an Amazon version of the phone with a locked bootloader so it's always been stock.
This is very interesting, but I actually noticed this issue when I was about 35 miles from home, and persisted throughout my trip home - so I don't think that's the problem for me. I appreciate your response though!
I suppose it could be related. Mine phone worked continuously then stopped. Nothing intermittent like what you are describing.
I'm still using Visible, but on an old iPhone 6s Plus. I have a Mint Mobile SIM in the G7 Power for now - also says "No service" though I also have a perpetual unread voicemail notification with this Mint SIM inserted.
Click to expand...
Click to collapse
same here, it only stopped working after I flashed my third custom rom, I haven't been able to find a fix and I've dealt with this issue for around a month and it only gets worse. I hope it isn't hardware for you or me though.

Reflash the stock modems

roadkill42 said:
Reflash the stock modems
Click to expand...
Click to collapse
Certainly should be tried.
Code:
fastboot flash modem NON-HLOS.bin
fastboot erase modemst1
fastboot erase modemst2
fastboot flash fsg fsg.mbn
Sent from my ocean using XDA Labs

Quote: Originally Posted by og1502 I used LMSA to flash the latest stock firmware
roadkill42 said:
Reflash the stock modems
Click to expand...
Click to collapse
How to get those modem files?.... I know where to download the stock rom but .... gah I am a noob.
Visible NO SERVICE whatsoever, halp!! :crying::crying:

They inside the stock firmware

roadkill42 said:
They inside the stock firmware
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Thanks! applied those from the latest android 10, still no service. so sad..
DO u know what else can be done? Thanks again

lessmeat said:
Thanks! applied those from the latest android 10, still no service. so sad..
DO u know what else can be done? Thanks again
Click to expand...
Click to collapse
Try the rr rom

roadkill42 said:
What carrier u using now if ur on verizon that's the problem it don't like custom roms and which roms
Click to expand...
Click to collapse
I'm having a similar problem. I'm on the Verizon network. I get a "Mobile network is not available" message. I was running LineageOS 17, then switched to Resurrection Remix 8. I have the same problem with both ROMs. I have been trying to narrow down whether or not this is a hardware issue or software issue or a verizon blocking issue.

tmiller101 said:
I'm having a similar problem. I'm on the Verizon network. I get a "Mobile network is not available" message. I was running LineageOS 17, then switched to Resurrection Remix 8. I have the same problem with both ROMs. I have been trying to narrow down whether or not this is a hardware issue or software issue or a verizon blocking issue.
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Click to collapse
It's rom ishues the new colt rom and the new rr should work . Most of these roms are for GSM carriers they are starting to get the cdma to work now

roadkill42 said:
It's rom ishues the new colt rom and the new rr should work . Most of these roms are for GSM carriers they are starting to get the cdma to work now
Click to expand...
Click to collapse
Newer than RR 8.6.4? Not sure I have heard of colt. I'lll have to dig into that.