G981U Unlocked no service after update - General Questions and Answers

Hi all, new noob member here with hopefully a simple question. I bought an unlocked S20 with tmobile firmware about a month ago. I'm using a verizon SIM card and everything worked fine until yesterday when Tmobile sent out an update. At first I had no mobile data but could still send texts. After searching, i saw under my SIM card status it said IMS not registered. Not knowing much about this stuff I was thinking that maybe I needed to flash verizon firmware onto my phone and that would fix it ( I have not done that yet). I went to the verizon store and got a new sim... same issue. I also found a website listing access point details, I plugged in all the information and now I have 4G but i am still unable to send texts. I'm wondering if anyone has any ideas as to what my problem might be. I'm trying to avoid flashing new firmware onto my phone because I don't have a great understanding of how to do it, and i really dont want to brick my phone. Any suggestions would be appreciated.

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[Q] Sim driver?

So i tried rooting my phone using debloated_deodexed_ep4d.tar.md5.
I took out the sim card during the process, even have a friends charge to test something from doing this before. I found out that some how after the flash the phones sim card slot stops working ive tried many other roms and modems to try getting it to work is anyone able to tell me why it would stop working does anyone have the working piece i need to get it to work again?
If you tried other roms, with the same result, then you need to get your phone exchanged.it isn't a dover issue if it happens with all roms.
xfallenxcripplex said:
So i tried rooting my phone using debloated_deodexed_ep4d.tar.md5.
I took out the sim card during the process, even have a friends charge to test something from doing this before. I found out that some how after the flash the phones sim card slot stops working ive tried many other roms and modems to try getting it to work is anyone able to tell me why it would stop working does anyone have the working piece i need to get it to work again?
Click to expand...
Click to collapse
Call verizon and get to second level of technical support. They can send something to your sim that displays "updating sim" on your screen.Not saying this will fix your issue but it worked for me on a similar situation. first thing tech guy asked was "you have 4g phone?" Than he sent the info.
Sent from my SCH-I510 using xda premium
i rooted my phone as soon as the first debloated rooted+voodoo came out and that installed fine but i liked having some of the features they got rid of and was a little buggy and ive tried two different debloated rooted roms they might be different but they seem to look the same and i cant do the sim update because i live in alaska where they have no "verizon" towers just leased towers or whatever from another cell leader in our area but suck for cell phone choices and only recently became price comparative. well i was hoping id get a programmer or someone that could help or someone who has an exact copy but i lost my job so i had to turn off my phone anyways better to stay local anyways. i just put my service on pause still have the unlimited package why i wanted to get root back on my phone

Running the phone after Factory Data Reset Without Verizon SIM, How ?

Hello guys,
After loosing my HTC ONE X on the street a week ago, I bought from some guy an almost brand new GALAXY S3 without knowing it is a VERIZON version.
I live in Israel so i had no idea what is the meaning of buying a device that will work only on Verizon network, we only have GSM here.
The guy i bought it from also had no idea what it means as his father bought it on the US and brought it here wishing to sell it as he had no use in it.
Without realizing the mistake I've made, I then made another one, Taking out the VERIZON SIM CARD and giving it back to the owner!
I thought to myself... well... that's his SIM CARD, not gonna be using that one...
Well, i got home to find out i'm in trouble with this deal I've made, i searched for a way to unlock it for GSM networks and i saw that here in XDA someone made it possible.
As i started working on it i had to download from Google play an application, when i was asked to pay for it i saw it's running on the old owners google account, so i decided i don't wanna pay with my credit while he might get the receipt for it and i figured i should do a Factory Data Reset for the phone and start from point zero the whole process.
Sadly i had no idea i'm doing another big mistake because when the phone finished the reset it asked for a VERIZON SIM CARD in order to run, well you know where that SIM Card is - back at the previous owner and i'm not even sure i will be able to track him down again.
I wish to get this device working without any traces of Verizon, maybe beside the name on the back panel of the device.
Now that the device won't even run without the SIM, what should i do ?
Thanks in advance,
Ohad.
ohadgfn said:
Hello guys,
After loosing my HTC ONE X on the street a week ago, I bought from some guy an almost brand new GALAXY S3 without knowing it is a VERIZON version.
I live in Israel so i had no idea what is the meaning of buying a device that will work only on Verizon network, we only have GSM here.
The guy i bought it from also had no idea what it means as his father bought it on the US and brought it here wishing to sell it as he had no use in it.
Without realizing the mistake I've made, I then made another one, Taking out the VERIZON SIM CARD and giving it back to the owner!
I thought to myself... well... that's his SIM CARD, not gonna be using that one...
Well, i got home to find out i'm in trouble with this deal I've made, i searched for a way to unlock it for GSM networks and i saw that here in XDA someone made it possible.
As i started working on it i had to download from Google play an application, when i was asked to pay for it i saw it's running on the old owners google account, so i decided i don't wanna pay with my credit while he might get the receipt for it and i figured i should do a Factory Data Reset for the phone and start from point zero the whole process.
Sadly i had no idea i'm doing another big mistake because when the phone finished the reset it asked for a VERIZON SIM CARD in order to run, well you know where that SIM Card is - back at the previous owner and i'm not even sure i will be able to track him down again.
I wish to get this device working without any traces of Verizon, maybe beside the name on the back panel of the device.
Now that the device won't even run without the SIM, what should i do ?
Thanks in advance,
Ohad.
Click to expand...
Click to collapse
In setup when you are on language screen press left corner/right corner/left corner/right corner/volume up. Should boot to home screen.
prdog1 said:
In setup when you are on language screen press left corner/right corner/left corner/right corner/volume up. Should boot to home screen.
Click to expand...
Click to collapse
Thanks but i was able to track down the previous owner and get the verizon sim card.
I found away to use it on GSM but still im very disappointed because im not sure there´s a real way to remove any trace for the verizon stuff installed here and there are few errors like it is connected to the provider but it says no verizon sim card connected.
and im not so sure all the device's frequencies are "open" for my provider.
I was wondering if there's any option to burn an international galaxy version to the device and it will bypass all of these issues.
ohadgfn said:
Thanks but i was able to track down the previous owner and get the verizon sim card.
I found away to use it on GSM but still im very disappointed because im not sure there´s a real way to remove any trace for the verizon stuff installed here and there are few errors like it is connected to the provider but it says no verizon sim card connected.
and im not so sure all the device's frequencies are "open" for my provider.
I was wondering if there's any option to burn an international galaxy version to the device and it will bypass all of these issues.
Click to expand...
Click to collapse
not unless you want paperwieght for a device.
Why don't you just flash CM10 or similar to get rid of all the VZW stuff.... that's what I did.
Sent from my SCH-I535 using Tapatalk 2
droidstyle said:
not unless you want paperwieght for a device.
Click to expand...
Click to collapse
Why would that happen ? There's no option to do something like that what so ever ?
Beemer533 said:
Why don't you just flash CM10 or similar to get rid of all the VZW stuff.... that's what I did.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
Not sure how to do so, but either way i'm not sure i will get the device working completely normally with my local SIM card on a gsm network, without bugs, without asking me to put a verizon sim card all the time, without having any option to update the device...
I dunno, i thought i could easily get this Galaxy version to become unlocked completely and get it running like all the other guys around...
Unless anybody here have a good recommendation about what should i do to overcome the verizon and networks issues, maybe i should just sell this guy on ebay and get a normal version...
Do you think this would be a smart move to do ?
Beemer - after you flash the CM10, do you still need to unlock the device and do you still get issues running on other than Verizon providers or do you enjoy a device that is similar to the worldwide versions ?
Thanks,
Ohad.
If you flash an international ROM on a Verizon S3, your phone will no longer power on or do anything useful. That's why it will become a paperweight. Flashing an international ROM on your Verizon S3 is one of the easiest ways to make it useless.
International=quad-core us=s4 processor, very different guts.I'd listen to the ppl on this forum, unless you want to end up with a paper weight.
Sent from my SCH-I535 using xda premium
ohadgfn said:
Why would that happen ?
Click to expand...
Click to collapse
it will put your phone into qpst diag mode and the only way to recover it will be with jtag. try it if you dont believe...what do i know.
droidstyle said:
it will put your phone into qpst diag mode and the only way to recover it will be with jtag. try it if you dont believe...what do i know.
Click to expand...
Click to collapse
alright then... i won´t go for it.
but what about the other issues ? what do you guys recommend to do with the device ?
I'm thinking "get rid of it or get it working smoothly", the question is, is it possible to have it running "just like the unlocked international version" ?
prdog1 said:
In setup when you are on language screen press left corner/right corner/left corner/right corner/volume up. Should boot to home screen.
Click to expand...
Click to collapse
This just works on stock rom??? Whats happened in cm10 or aokp?? How to avoid activating screen?
Sent from my SCH-I535 using XDA Premium HD app
tiraceite said:
This just works on stock rom??? Whats happened in cm10 or aokp?? How to avoid activating screen?
Sent from my SCH-I535 using XDA Premium HD app
Click to expand...
Click to collapse
Know it works on Touchwiz roms. It may not be in AOSP based roms.
Well, i flashed CM10 successfully, i was able to receive and send SMS before with the Stock ROM, and also to make/receive phone calls but i had sim card issues and errors and also some unwanted Verizon apps and stuff.
After updating the device to the latest Verizon version, i couldn't make phone calls, just receive and i could send and receive SMS.
Now that device runs much faster on the CM10 and i can make/receive phone calls but i can't send SMS.
*UPDATE: I have updated to the latest CM10 version, now i can't connect to the provider at all... no internet/phone/sms at all.
SOS
Ok, Im going to try a different tactic, i saw some people tried flashing At&t Roms on their verizon devices and they done it with success.
So far i tried doing it twice, one time with CM10 ROM for at&t, the 2nd time with stock at&t ROM.
I've tried doing it through CWM.
Both times i got an error while installing... it just didn't move on.
Luckly i had the CM10 for the verizon Zip file over there aswell so i installed that ROM again just to get the device running.
Any ideas how to flash the AT&T ROM on the Verizon Device ???

[Q] unlocked tmo blaze not getting att data

I gave my rooted TMo Galaxy Blaze to a friend on ATT. ATT SIM installed, unlock code worked fine. Talk and text on ATT is fine. But no data. searched: Added a new APN.still nothing. Friend called/visited ATT. ATT says: We see it...It should be working..all apn settings are correct...no reason it isn't working....they checked the account and the data plan...It will work they said. But no luck. Could it be the sim card issue I have read about? Thats my next step. Ask ATT to change out sim card. is that reasonable? I'm at my wits end. My friend is 8 hours away..so I'm trying to figure this out long distance. I'm a noob..(you gotta start somewhere).but I have searched and searched and I refuse to give up. Friend is ready to give up..go to TMobile...but I am too stubborn! He shouldn't have to do that.
Someone at a private phone shop looked at it for him. Told him the data problem could be because of the root. Wanted to charge him $40 to "undo" the root. Yes, I rooted the phone but I never changed the ROM. I got nervous about deleting bloatware..afraid of which ones were safe..but the root process shouldn't affect anything right?. Any help is appreciated. I will keep looking for answers.. My next goal is to upgrade the gingerbread to ICS. I think I can do that..but I have some learning to do.

[Q] SIM Unlock Rooted and Custom Flashed Verizon SCH-i535 GS3? for MetroPCS

Hello whats up everyone, I'm in a need of help this evening!
After doing much heavy research i still have not been found a 100% concrete wat to unlock my verizon SGS3 so that i can use it with other sim cards such as MetroPCS or T-Mobile
I currently have it running EZ-Unlocked and rooted with CleanRom 4.1.2 when i put in a non verizon sim such as a non-activated T-Mobile card, it doesn't say "sorry, this SIM is not supported. please....." but says simply no service. Is my phone already SIM unlocked?
I also saw this handy method:http://www.youtube.com/watch?v=-cmiEZcw1z8
but when the NETWORK LOCK option came up..it just said NETWORK LOCK and no 3 options I could choose..hmmm
EDIT: heard that 4.1.1 HAS the option to get rid of the NETWORK LOCK option and this feature was apparently removed on purpose with 4.1.2? But i'm running CleanROM?
BTW: i've tried "galaxsim unlock" but it's not compatible with the US Variant yet.
MetroPCS will get my phone working on their network and do all the trickery...I just need to know if my phone is SIM unlocked.
BUMP: Look Guys, I've seen quite a few people view this with nothing to say...It's URGENT. i can't afford a new handset and verizon is cutting us off for good because my girlfriends cousin who was also on the plan that her mom was on the name for...went over on data twice. Her Cousin doesn't live with us but was on the plan...he was suppose to be grounded for going over the FIRST time but fooled his mom into giving her the MicroSD card and lied and said that was the SIM card. so he went over another month probably downloading porn and ****.
verizon said there is no rush to pay the overages....as we will not be turning back on service. We use our cell phones as the priority communication tool..no home phone....right now we have no provider. I need an answer please
stanleyopar2000 said:
BUMP: Look Guys, I've seen quite a few people view this with nothing to say...It's URGENT. i can't afford a new handset and verizon is cutting us off for good because my girlfriends cousin who was also on the plan that her mom was on the name for...went over on data twice. Her Cousin doesn't live with us but was on the plan...he was suppose to be grounded for going over the FIRST time but fooled his mom into giving her the MicroSD card and lied and said that was the SIM card. so he went over another month probably downloading porn and ****.
verizon said there is no rush to pay the overages....as we will not be turning back on service. We use our cell phones as the priority communication tool..no home phone....right now we have no provider. I need an answer please
Click to expand...
Click to collapse
Drag...

Question Can't remove old Carrier's information on Global Unlocked phone

Hi all,
I have been stay up two days to looking for my solutions and would you guys at least let me know if this is impossible or possible?
1. Bought Global Unlocked AT&T phone from my friend. When he sold it to me, I made sure it is unlocked and move to any carriers.
2. I check IMEI numbers and everything from Verizon (I called them) they confirmed this phone is compatible in their netowrk and will work.
3. I switch my iphone 11 max pro sim card (verison) and put it to Samsung Z flip 3 5g.
4. Everything works find but, I saw AT&T logo when I start the phone. I also some of AT&T setting's everywhere. I did factory format and showing the same thing.
5. I called verzion and they said, because I use 4g sim to 5g phone and asked me to visit their direct retailer to get free 5g sim card and I did.
6. HOWEVER, after change even sim, it shows still AT&T logo and AT&T related menu in the settings and everywhere. Also, I did not even have wifi calling feaatures.
6. After that I have been search and study two days but, still couldnt' figure out what's going on. What I found is I need ask my current carrier to push OTA. (that's the one of other people suggested and I did chat with verizon and they said, they will get back to me after senior engineer to check if they can do it.
7. They also make sure my phone is registered their networks and works fine.
It is really bothering me to see some of AT&T settings still turn on and also shwoing in this phone.
Probably this phone is global unlocked phones provided from AT&T from the beginning.
While i am searching and reading the articles, lots of people told me to gave up because i am even on Verizon, they said I have to depends on AT&T's OTA updates and etc....
it is my fault to bought it from my friend even tho I belived that because it worked, I thoguht that everyhthing would be fine......
What should I have to do? Just stay with it and sell it when z flip 4 is come out? Do I really didn't have any change to correct this issue?
I was fan of iphone and i swiched to android first in my life and everything went wrong. I want to fix and stay on Samsung. Would you guys can at least let me know there's no way or there's way to correct this so that at least I can ignore everthing and stop trying to find answer all day wrong........
Thank you and sorry for long question... you guys are my last hope.
Thank you in advance.
Respectfully,

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