Database Info

[Q] Unknown Baseband???

been searching for 10+ hours and no luck or solution.
i was on gummycharged ep1f/ep1h rom and everything was working fine until today.
i don't know what triggered it, but my phone just restarted and then lost all signal.
after searching and looking at phone info, i found first line under baseband version shows "unknown".
tried flashing to every possible roms out there using odin and it would not bring the phone back to life.
funny thing is i have no problem w/ 4glte service, which allows me to surf and download but no voice service.....
do i have no choice but to go to verizon for replacement phone?
thank you.

xc1097 said:
been searching for 10+ hours and no luck or solution.
i was on gummycharged ep1f/ep1h rom and everything was working fine until today.
i don't know what triggered it, but my phone just restarted and then lost all signal.
after searching and looking at phone info, i found first line under baseband version shows "unknown".
tried flashing to every possible roms out there using odin and it would not bring the phone back to life.
funny thing is i have no problem w/ 4glte service, which allows me to surf and download but no voice service.....
do i have no choice but to go to verizon for replacement phone?
thank you.
Click to expand...
Click to collapse
yeah I'd take it into them, sounds like some hardware got fried.. however I'd probably try to flash a froyo rom for whatever good it'd do, if they somehow can check baseband and it shows GB your warranty is void and they will not fix or replace it
blazing through on my VZ Droid Charge 4G

found this over in the Galaxy s 9000 forum (wc8 posted it)
Mine now works fine
so what was the cause - still no idea
so what did help - rebooting the phone couple of times without the sim inside
heads up !
worth a try and not my fault if something blows up...
Begin minor rant:
Isnt it sad that we (everyone including devs and XDA as well as casual helpers like me) have to put that final line in there so they dont get blamed/flamed if things get f'd up?
/rant

Had the same problem with my Fascinate. After a flash I lost all 3G and phone capabilities. What I did was reset my phone line with the esn of an old phone I had lying around. Go to this thread. It will show you what you need to do.http://forum.xda-developers.com/showthread.php?t=1051543. I took mine to Verizon, and also spent hours with tech support and, to no avail. This esn swap did the trick. Good luck.

did the stuff you were flashing include the radios? like this one?
http://forum.xda-developers.com/showthread.php?t=1172182
or this thread?
http://forum.xda-developers.com/showthread.php?t=1111486

yes, all the roms i flashed had full radio from ED1, ED2, EE4, EP1F
none worked....
i'll try to search and see if esn method works that someone mentioned above.
keeping my fingers crossed....
currently, phone is @ stock ee4 unrooted w/ no baseband for cdma radio.

if anyone else is having same problem, do not run esn swap!!!
it will cancel your unlimited data and there is no way to bring it back.
thank god i read it before i tried it....
phone still no go with unknown baseband.....
HELP?!?!? PLEASE?

xc1097 said:
if anyone else is having same problem, do not run esn swap!!!
it will cancel your unlimited data and there is no way to bring it back.
thank god i read it before i tried it....
phone still no go with unknown baseband.....
HELP?!?!? PLEASE?
Click to expand...
Click to collapse
i called Verizon and had them do it over the phone. In other words, they moved my line to a dummy ESN on their end and some random number to my phone and then switched it right back, all while my phone was off, so when my phone was turned back on it got re provisioned on their network, which fixed my 3G data issues......but i dont think this is the OP's solution. When i had that problem I had phone service, just intermittent or no 3g data is all

xc1097 said:
if anyone else is having same problem, do not run esn swap!!!
it will cancel your unlimited data and there is no way to bring it back.
thank god i read it before i tried it....
phone still no go with unknown baseband.....
HELP?!?!? PLEASE?
Click to expand...
Click to collapse
You won't lose your unlimited data unless you switch to an ESN that is not a smartphone. I have switched my line a couple times and still have unlimited.
Sent from my SCH-I510 using XDA App

well if you are stock ee4 unrooted I think you are golden. Take your phone to verizon and have them deal with it.

H3Dude said:
You won't lose your unlimited data unless you switch to an ESN that is not a smartphone. I have switched my line a couple times and still have unlimited.
Sent from my SCH-I510 using XDA App
Click to expand...
Click to collapse
I am not sure abotu this (not saying it is wrong but I never tried) I say take the 20 minutes on the phone with VZW and let them do it...

UPDATE
took it to verizon store twice, got sim cards replaced twice at two different locations.
still no go, rep recommended me to contact replacement center.
talk to tech for and hour trying to figure it out,
the tech announced that my cdma radio is fried.....
so i asked when i'll get the replacement and he said sometime on tuesday.
and i asked if i could use my really old LG non-smart phone for time being and he said i'll loose my unlimited data and moved to 2gb tiered data plan...
so i guess i'll be out of service until tuesday....

piizzadude said:
I am not sure abotu this (not saying it is wrong but I never tried) I say take the 20 minutes on the phone with VZW and let them do it...
Click to expand...
Click to collapse
its absolutely true...no problem if you go through VZW to do the swap

jamesnmandy said:
its absolutely true...no problem if you go through VZW to do the swap
Click to expand...
Click to collapse
Hey I believe ya, I am just in the better safe than sorry frame of mind when it comes to the unlimited data structure. It does make sense though since i did switch from the fascinate to the charge without losing it

they told me this will only work if you went from smart phone to another smart phone.
however, if you went to non smart phone and then smart phone, you'd lose your unlimited plan.

I'm surprised this couldn't be fixed with a software flash. I came from a Samsung Epic and this was a regular occurrence on at least one of the Gingerbread leaks. Happened to me at least once - used ODIN and reflashed the whole shebang (full TAR with modem) and got it back up and running.

i wish there was an easy fix like you said.
then i don't have to wait for them to send me replacement device and also saves me from hassle of reapplying invisible shield. the maximum protection kit is pain in the ass to apply.
i've flashed with every single rom+radio out there in many different order with both odin 1.3/1.7/1.8 and samsung pstlite.
i've also tried flashing radio only and still no luck.

[Q] No network or sim card detected after flashing GB rom

After flashing a GB rom I am no longer able to access the T-mobile network. My sim card is no longer detected and I have absolutely no network connectivity. I have tried to flash back to froyo and back to other GB roms without any success. Any help would be greatly appreciated.

bat82 said:
After flashing a GB rom I am no longer able to access the T-mobile network. My sim card is no longer detected and I have absolutely no network connectivity. I have tried to flash back to froyo and back to other GB roms without any success. Any help would be greatly appreciated.
Click to expand...
Click to collapse
Check under phone info and see what your baseband version is.
There is a dumb little problem that I've seen pop up a few times where the IMEI goes missing and the baseband number with it... then this happens...

If the sim card isnt being read at all, as in (please insert sim), shouldnt matter with imei as imei has nothing to do with service. Even with a null/ 000000000 imei, calling, texting, data all works. Its probably your sim card tray.
If your sim card is read, but just no bars, etc, then try reflashing and factory resetting.
Sent from my SGH-T959V using XDA Premium App

My baseband version is "unknown" and my phone says I need to insert sim. If it is my sim card tray, then how do I get it fixed? Thanks.

Light-라이트 said:
If the sim card isnt being read at all, as in (please insert sim), shouldnt matter with imei as imei has nothing to do with service. Even with a null/ 000000000 imei, calling, texting, data all works. Its probably your sim card tray.
If your sim card is read, but just no bars, etc, then try reflashing and factory resetting.
Sent from my SGH-T959V using XDA Premium App
Click to expand...
Click to collapse
I had the same problem a month ago, and found a good handful of threads on it. Most of those threads also reported missing base band and imei. I resolved it by flashing back to 100% stock and starting over. Not saying it'll fix you for sure but it worked for me.
Sent from my SGH-T959V using XDA App

Had a similar issue a few months ago, flashed a different ROM and it went away. Not sure is it was a coincidence but recently upgraded to stock KJ6, everything was fine for a few days then all of a sudden no T-Mobile network/ Manually logged on, crappy signal, white 4G icon, calls dropping, I can hear caller, they can't hear me etc... Figured the network might be swamped due to Thanksgiving holiday, waited a day but it got even worse. My wife's SGS4G meanwhile continues to have great signal- not a sim issue as I swapped hers in to my phone and it still sucked. Called T-mobile tech support, new phone arrives this Friday. They blamed it on the upgrade to VUVKJ6, I wan't going to argue with them as I didn't have the phone insurance (I do on the new one) and they said that because it happened after the KJ6 upgrade it was on them .... it only cost me $20 for a brand new replacement.
I do have to say that T-Mobile customer service kicks ass.

Try flashing a different rom to see if itll fix the problem. The last resort would be resoldering. Try all other options first.
Sent from my SGH-T959V using XDA Premium App

Thanks for the replies. I tried flashing to 100 percent stock and nothing changes. It doesn't matter what I flash to or how many times I restore factory setting and wipe all user data. I always end up with a phone that doesn't detect the T-mobile sim card or the network. I requested an exchange for 20 dollars since my phone is still under warranty... I hope I will be able to flash to a different ROM next time without the same problem.

bat82 said:
Thanks for the replies. I tried flashing to 100 percent stock and nothing changes. It doesn't matter what I flash to or how many times I restore factory setting and wipe all user data. I always end up with a phone that doesn't detect the T-mobile sim card or the network. I requested an exchange for 20 dollars since my phone is still under warranty... I hope I will be able to flash to a different ROM next time without the same problem.
Click to expand...
Click to collapse
I seem to be in the same predicament after flashing KJ6.
Spent the whole day flashing different ROMs, to no avail.
Guess my only option is contacting t-mo, and see if i can get a replacement.
Will they know if i updated through Kies, or Odin?

i'm in the same boat. bought my phone unlocked through amazon two months ago and upgraded to stock KJ6 through Kies when tmo released it. worked fine until two days ago. SIM works in other phones, IMEI number looks good, APN settings look good. Haven't tried switching to other builds because all the threads I've seen here at xda and other forums seem to show that doesn't change anything.
didn't realize how much i liked my phone until i went to the backup motorola zine the last few days. bogus.

Before you send your phone back make sure it is 100 percent stock ROM and not rooted. Also, factory reset and wipe all user data.

bat82 said:
Before you send your phone back make sure it is 100 percent stock ROM and not rooted. Also, factory reset and wipe all user data.
Click to expand...
Click to collapse
Thanks.
I did know all that. Just wasn't sure of they could still tell I didn't do it through Kies.
Anyway, just contacted T-Mobile, and my new phone should be here Monday.
Awesome customer service.

My t-mobile exchange phone arrived and I upgraded to latest GB via Kies and then I flashed Dr. Honks latest kernel and everything works. No network or sim problems.

I am really happy with T-mobile customer service too. My phone arrived only 3 or 4 days after I requested an exchange. No questions asked.

From what I have been reading on the forums, it doesn't matter if the phone was upgraded via kies or flashed via odin. The phone just has to have 100 percent stock

Damn having the same problem,no sim card detected.No baseband,no IMEI.Went stock via Odin,nothing.Went to stock Froyo and still nothing :-(

sgs4g, same problem...only mine im sure is the sim tray. this was a refurbished phone i bought from craigslist, brand new.
stock froyo, gb, rooted ocataine, doesnt matter- every few weeks it would say insert sim..
Now im just gonna call and tell them it happened after the upgrade because it was there faulty phone to begin with.. now how can i go back to perfectly stock? and does that mean i should send it back on froyo or gb?

I've had/am having this problem. I brought my phone to the UK and I had this issue when I tried a new carrier. 3 weeks ago I was able to plug my phone in to the charger and then put it in airplane mode and out and I had no issues until I tried a 3rd carrier today and now the issue is back and my previous fix isn't working. Because I'm not using T-mobile and bought the phone off of a friend I'm hoping I can find a way to fix this without sending in my phone because that really isn't an option.
---------- Post added at 06:53 PM ---------- Previous post was at 05:56 PM ----------
after looking around a bit more and flashing a few roms unsuccessfully I found this http://forum.xda-developers.com/showthread.php?t=1323973&page=6
I removed the battery and sim from my phone for 10 min. Put everything back in, booted and everything is working as it should be. Hope this helps.

Glad you found the battery fix, I have stated that fix in a couple of threads, and started a thread called No carrier signal + IMEI problems = Take out your battery, but it has been pushed down like 3 pages cause no one comments on it.

rafikis said:
I've had/am having this problem. I brought my phone to the UK and I had this issue when I tried a new carrier. 3 weeks ago I was able to plug my phone in to the charger and then put it in airplane mode and out and I had no issues until I tried a 3rd carrier today and now the issue is back and my previous fix isn't working. Because I'm not using T-mobile and bought the phone off of a friend I'm hoping I can find a way to fix this without sending in my phone because that really isn't an option.
---------- Post added at 06:53 PM ---------- Previous post was at 05:56 PM ----------
after looking around a bit more and flashing a few roms unsuccessfully I found this http://forum.xda-developers.com/showthread.php?t=1323973&page=6
I removed the battery and sim from my phone for 10 min. Put everything back in, booted and everything is working as it should be. Hope this helps.
Click to expand...
Click to collapse
The link you posted is no good, can you tell me where it was at? Also what are all of the steps to get SIM or IMEI working again just the remove SIM and Battery for 10 Minutes?
There are a lot of people who flash custom ROMS on Telus, Rogers, Wind and T-Mobile who have this problem and if what you are saying works then that needs to go viral. What is strange is that some have the issue same ROM and Phone and others don't it's a hard issue to try an troubleshoot to say the least.
Any more info on this subject would be awesome bro.
Thanks,
Jk

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

Unlocked T-Mobile Data and Reception Dropping in and Out

I picked up an unlocked T-mobile G5 and I'm using it for AT&T... The rep at the store applied the APN setting for ATT but I noticed after I got a new SIM installed and went home the reception and data connection started dropping in and out.
Basically, when the phone is sleeping and then I wake it starts searching for network then gets reception then get a signal for a couple mins then drops again and searches. Since it's a T-Mobile phone on an ATT network is there certain settings that I need to turn off like VoIP, WIFI calling etc? Any ideas?

Wipe out all existing APNs and start from scratch? Use the NXTGENPHONE APN. I'm using an unlocked T-Mobile H830 LG G5 on AT&T and I have no problems. My sister's Nexus 6 uses the same APN no problems either.
https://www.att.com/esupport/article.html#!/wireless/KM1062162

smartnphone said:
Wipe out all existing APNs and start from scratch? Use the NXTGENPHONE APN. I'm using an unlocked T-Mobile H830 LG G5 on AT&T and I have no problems. My sister's Nexus 6 uses the same APN no problems either.
https://www.att.com/esupport/article.html#!/wireless/KM1062162
Click to expand...
Click to collapse
So I followed your steps.. I wiped all existing APNs and entered the APN setting in the link you provided and used the NXTGENPHONE APN but I couldn't get data but just had reception to make calls. So I changed the name to AT&T and the APN name to phone and I get data and reception but it still drops in and out.
I went to ATT to see what they could suggest but the only thing they offered was maybe a faulty SIM card and switched it out but it's still doing the same thing... Has anyone experienced this? Should I do a factory reset maybe? If I do that, I won't lose SIM unlock right?

sguerra923 said:
So I followed your steps.. I wiped all existing APNs and entered the APN setting in the link you provided and used the NXTGENPHONE APN but I couldn't get data but just had reception to make calls. So I changed the name to AT&T and the APN name to phone and I get data and reception but it still drops in and out.
I went to ATT to see what they could suggest but the only thing they offered was maybe a faulty SIM card and switched it out but it's still doing the same thing... Has anyone experienced this? Should I do a factory reset maybe? If I do that, I won't lose SIM unlock right?
Click to expand...
Click to collapse
I was going to suggest a factory reset as a last resort. You won't lose the sim unlock; it's permanent unlock.
Troubleshooting is the name of the game and you'll have to keep having to try potential solutions until it's fixed.
Hopefully it's not a hardware issue with the radio or you'll have to swap it out and reunlock it all over again.

are you on 10A or 10D?
10D seems to improve the radio... but if you wan root/twrp make sure you do all that on 10A first before upgrading to 10D.
also, have you tested the phone in different areas? or just at your house and immediate area? perhaps it's just an issue in specific locations? what if you drive across town or something?

smartnphone said:
I was going to suggest a factory reset as a last resort. You won't lose the sim unlock; it's permanent unlock.
Troubleshooting is the name of the game and you'll have to keep having to try potential solutions until it's fixed.
Hopefully it's not a hardware issue with the radio or you'll have to swap it out and reunlock it all over again.
Click to expand...
Click to collapse
Performed a factory reset and issue is still there but slightly improved but I need to test it more... Basically, when I wake the phone it searches for network (not all the time but here and there) then locks a signal..

autoprime said:
are you on 10A or 10D?
10D seems to improve the radio... but if you wan root/twrp make sure you do all that on 10A first before upgrading to 10D.
also, have you tested the phone in different areas? or just at your house and immediate area? perhaps it's just an issue in specific locations? what if you drive across town or something?
Click to expand...
Click to collapse
In on 10D.. Yeah I tried it in different areas and driving when I'm art a stoplight I can see it searching for network.. I switched the SIM card and did a factory reset any other suggestions?

Is your Network mode set to GSM/WCDMA/LTE auto? If it's not area specific it might be hardware related.
How did you get the 10D update on AT&T btw?

smartnphone said:
Is your Network mode set to GSM/WCDMA/LTE auto? If it's not area specific it might be hardware related.
How did you get the 10D update on AT&T btw?
Click to expand...
Click to collapse
Yes, my network mode is set to that setting. The person I purchase this phone from had T-Mobile and updated before they sold it to me.

sguerra923 said:
Yes, my network mode is set to that setting. The person I purchase this phone from had T-Mobile and updated before they sold it to me.
Click to expand...
Click to collapse
Last thing to try is Mobile networks>Network operators>Search networks. Maybe manually choosing one might help? Enable Data Roaming?
Could be a hardware issue if not software.

smartnphone said:
Last thing to try is Mobile networks>Network operators>Search networks. Maybe manually choosing one might help? Enable Data Roaming?
Could be a hardware issue if not software.
Click to expand...
Click to collapse
Yeah, I tried that too.. Got back from Tmobile and they said that another person experienced the same issue couple weeks ago and they said that some G5s that are unlocked and used on different networks are still trying to jumping back on the tmobiles phone network hence my phone searching signals off and on...

Just wanted to give another confirmation that the LG-H830 works perfectly on AT&T (H83010D [BL,modem,system], rooted, unlocked). I gave up on Verizon and my fiancé now uses it on AT&T. She loves it!

Geez.. I got scammed. The person looks like they file a insurance claim on the phone so my ESN is blacklisted! Great! Lesson learned the hard way. Any suggestions what I can do? I saw that people are buying bad ESN phone on ebay as long as I post that it's a bad ESN.

OP, I had the exact same problem on T-Mobile after doing a temporary unlock. I took it to a T-mobile store and they tried swapping the SIM but that didn't help so they did a warranty replacement. Two days later I had a new phone and everything works again. I didn't (and won't) try to SIM unlock it again.
Sent from my LG-H830 using XDA-Developers mobile app

I have heard of people getting past blacklist. Think you can pay to fix it.
---------- Post added at 11:14 PM ---------- Previous post was at 11:13 PM ----------
Are you guys not changing the apns xml file????? Or enable roaming and setting rat to global?

jhasty01 said:
I have heard of people getting past blacklist. Think you can pay to fix it.
---------- Post added at 11:14 PM ---------- Previous post was at 11:13 PM ----------
Are you guys not changing the apns xml file????? Or enable roaming and setting rat to global?
Click to expand...
Click to collapse
I did some research online on blacklist repairs but do you or can anyone give me some recommendations on it? Sucks cause even if I get it repaired I wondering if I still will have issues with the reception..
Anyone tried this site? http://www.imeifix.com/

I just tried the sim unlock as well. I'm a tmobile customer so I really didn't have a reason to do it. Just wanted to see if it would unlock.
Well it said it could not be unlocked and I, out of dumb curiosity tried the temporary unlock. It worked and said it is unlocked until August. I think roughly 30 days after I did it.
Well, later that day or the next my phone started doing the same exact thing. Signal dropping and searching. Furthermore though, I woke up to a warm phone today. Same as it gets when doing lots of app updates. I unplugged it from the charger and watched the battery drop 4% in only 15 minutes of standby (screen off, not using the phone).
I just flashed it back to stock and relocked the boot loader and will see if it fixed it. Was running rooted 10d when this happened.
I'm starting to think that sim unlock app is evil or something. I haven't put my sim card back in as of yet but will update if it starts acting up when I do.
Possible explanation?:
I noticed a T-Mobile diagnostic app try to gain root access during the weirdness which I had never seen before. Maybe the sim unlock gains a sudo root to do the unlock but on a rooted phone with a non stock root manager causes the unlock app to endlessly loop trying to gain access and thus cause a warm phone and signal dropouts? Just a hunch but would be interested to see what others think.
*** Ok so quick update, I put my tmobile sim back in and the signal is dropping in and out again. The phone worked fine before I tried the unlock. This is so uncool.
Sent from my LG-H830 using XDA-Developers mobile app

I think I may have isolated the cause. I disabled the device unlock app in app settings and rebooted. Since then I haven't noticed the signal drop out.
EDIT: Yeah, that's a big nope. I'm still experiencing the problem after a total wipe and reflashing using LGUP refurbish mode. It's still dropping in and out, sometimes three times per minute. +1 to never use device unlock app.
I'm on stock unrooted 10d btw.
Oh, and the same SIM card works just fine in my older phones.
Sent from my LG-H830 using XDA-Developers mobile app

For what its worth, Att doesn't use the exact same bands as t Mobile....you might want to research some threads on the Att LG G5.

"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
Click to expand...
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.
Click to expand...
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
Click to expand...
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
Click to expand...
Click to collapse
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.
Click to expand...
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.