[Q] Phone signal problems - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

I have got at&t unlocked phone and I haven't had any problem from above an year but I have been having signal problems from two weeks now. Messages come and go after hours, sometimes they are quick. It's like my phone is on it's own mood whether to send or not. When I try to check credits I get the error "Connection problem or inavlid MMI code". Sometimes my phone's carrier disappear too. Signals are all full. I tried porting into another carrier and found no difference at all.
I think it's related to IMEI because when I *#06# then a pop comes written "0" on it instead of showing IMEI code. Please help! Thanks!

For some reason, it looks like the folder containing your IMEI has been corrupted. Try to re-install the imei using NV writer.
http://forum.xda-developers.com/showthread.php?t=1804117

D4nyal said:
I have got at&t unlocked phone and I haven't had any problem from above an year but I have been having signal problems from two weeks now. Messages come and go after hours, sometimes they are quick. It's like my phone is on it's own mood whether to send or not. When I try to check credits I get the error "Connection problem or inavlid MMI code". Sometimes my phone's carrier disappear too. Signals are all full. I tried porting into another carrier and found no difference at all.
I think it's related to IMEI because when I *#06# then a pop comes written "0" on it instead of showing IMEI code. Please help! Thanks!
Click to expand...
Click to collapse
Have you recently updated your rom or flashed anything? Maybe you could flash the modem files again and fix your problem?
When you go to about phone what does it say for baseband?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

The phone have been so if I restore, will it still be unlocked?

audit13 said:
For some reason, it looks like the folder containing your IMEI has been corrupted. Try to re-install the imei using NV writer.
http://forum.xda-developers.com/showthread.php?t=1804117
Click to expand...
Click to collapse
The phone have been unlocked so if I restore, will it still be unlocked?

theramsey3 said:
Have you recently updated your rom or flashed anything? Maybe you could flash the modem files again and fix your problem?
When you go to about phone what does it say for baseband?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
I think the problem occurred after I flashed leaked version of stock 4.3. Firmware was I747UCUEMJ2. I flashed CyanogenMod 10.2 hoping that it might fix the problem but it didn't made any difference.
I checked baseband version and surprisingly, it's I747UCUEMJ2. So, what do you think? Is that the problem? Also, how can I fix this? Last question, what if I restore IMEI etc then will it still be unlocked or I will need an at&t sim?

D4nyal said:
The phone have been unlocked so if I restore, will it still be unlocked?
Click to expand...
Click to collapse
D4nyal said:
I think the problem occurred after I flashed leaked version of stock 4.3. Firmware was I747UCUEMJ2. I flashed CyanogenMod 10.2 hoping that it might fix the problem but it didn't made any difference.
I checked baseband version and surprisingly, it's I747UCUEMJ2. So, what do you think? Is that the problem? Also, how can I fix this? Last question, what if I restore IMEI etc then will it still be unlocked or I will need an at&t sim?
Click to expand...
Click to collapse
Restoring will not re-lock the phone. If your imei and baseband appear correct, I don't think you need to inject the imei.
You could use Odin to flash back to stock and see if the problem persists.

audit13 said:
Restoring will not re-lock the phone. If your imei and baseband appear correct, I don't think you need to inject the imei.
You could use Odin to flash back to stock and see if the problem persists.
Click to expand...
Click to collapse
Flashed stock 4.1.1 rom. Baseband version has been changed. Restored IMEI and IMEI number now shows. Problem doesn't seem to be fixed yet.. :/

D4nyal said:
Flashed stock 4.1.1 rom. Baseband version has been changed. Restored IMEI and IMEI number now shows. Problem doesn't seem to be fixed yet.. :/
Click to expand...
Click to collapse
So the imei from the phone's keypad matches the imei on the phone's label?

Yes, it does.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

And I still can't check how many credits I have. When I dial *124# then it's saying "Connection problem or invalid MMI code".
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Sorry to disturb but I have a question. Since carriers over here doesn't provide micro-sim so we have to cut out large sims and then ready to use. So, I did that but I also noticed that my friend who has S3 got smaller sim circuit and my sim's circuit covers almost whole sim. Maybe that could be the problem? Please answer so I can then contact carrier.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Related

Help. Emergency Calls Only

As title says my HOX is stuck at Emergency Calls Only. I'm on stock Rom with Unlocked Bootloader and root. Also, i have access to my contacts, numbers, IMEI, and data so I don't think is HW issue. I have replaced SIM card and problem is the same. Any help is welcome. Thanks in advance
Did you try a factory reset ?
You Mister, Should not buy stolen phones.
Yes I did a factory reset and the phone isn't a stolen one. It was a brand new phone.
Are you sure you are installing your sim card in the correct way, side?
Sorry for maybe stupid question, but sometimes it happenes.
Is your phone carrier locked? If it's and you are having same carrier sim card you should go to them and ask for help.
No problem that your boot is unlocked.
Sent from my HTC One X using xda premium
cometangel said:
You Mister, Should not buy stolen phones.
Click to expand...
Click to collapse
That's kinda weird....his imei would be blocked !
And as for the problem.....i would go to the shop where it came from. If you tried a factory reset and it is on stock software.....not much we can do about that. If its not working on stock software i don't think a custom rom will save you
Did you try your SIM with another phone / hox ?
If I try the SIM card on another phone it works. All problems came since I updated to JB. I was on a custom ICS, the relocked and OTA, reunlocked for root and recovery and 3 days later problems started.
You might want to take it back. If you have warranty.
Sent from my Galaxy Nexus using xda premium
luis4ever said:
As title says my HOX is stuck at Emergency Calls Only. I'm on stock Rom with Unlocked Bootloader and root. Also, i have access to my contacts, numbers, IMEI, and data so I don't think is HW issue. I have replaced SIM card and problem is the same. Any help is welcome. Thanks in advance
Click to expand...
Click to collapse
its not a hardware issue as i have experience same issue and fixed it after more than 1 week investigation. kindly send the firmware detail *#1234#

GS3 Your SIM card does not allow a connection to this network.

Hi Im having major issues with my s3 running stock rom 4.1.2. So I tried to change my imei number earlier this week and I think I messed somthinv up bigtime. Whenever I try to connect to the telus network in settigs it says your sim card does not allow a connection to this network. I already tried to restore imei with nv items reader and writer from cdma workshop but it gives me an error "failed.. phone does not answer" I tried using qpst but it didn't work either. I tried a sim swap. I used to run cyanogen mod. The funny thing is with cyanogenmod it only detected the network codes. For example 302610 but on stock rom that's telus. And Yes I know its illigal to change imei.
Any help would be greatly appreciated.
Sent from my SGH-I747M using xda app-developers app
xmann1 said:
Hi Im having major issues with my s3 running stock rom 4.1.2. So I tried to change my imei number earlier this week and I think I messed somthinv up bigtime. Whenever I try to connect to the telus network in settigs it says your sim card does not allow a connection to this network. I already tried to restore imei with nv items reader and writer from cdma workshop but it gives me an error "failed.. phone does not answer" I tried using qpst but it didn't work either. I tried a sim swap. I used to run cyanogen mod. The funny thing is with cyanogenmod it only detected the network codes. For example 302610 but on stock rom that's telus. And Yes I know its illigal to change imei.
Any help would be greatly appreciated.
Sent from my SGH-I747M using xda app-developers app
Click to expand...
Click to collapse
Why would you try to change your imei ?
Anyways heres a post it explains backing up and restoring imei and fixing a corrupted imei.
Do a little searching next time.
http://forum.xda-developers.com/showthread.php?p=29514032
Sent from my SGH-I747 using Tapatalk

[Q] No carrier for Probam 5

i have installed the new Probam 5 on my note 2 3 times. and every time it boots up fine but i have no carrier signal. tried to search for carrier but it fails everytime. wifi works fine but phone is useless without a service provider. any thoughts on how to fix this issue?
Do you have the right APN?
Is your original IMEI still there?
Sent from my N7100, a.k.a. THE BEAST
cabessius said:
Do you have the right APN?
Is your original IMEI still there?
Sent from my N7100, a.k.a. THE BEAST
Click to expand...
Click to collapse
Baseband and model show up as unknown. not able to add APN.
If you dial *#06# do you get something started in 35... (don´t put the whole number here)?
cabessius said:
If you dial *#06# do you get something started in 35... (don´t put the whole number here)?
Click to expand...
Click to collapse
IMEI- blank
Synged said:
IMEI- blank
Click to expand...
Click to collapse
That means that you lost your IMEI while flashing.
Do you have a backup of the EFS folder?
If not I think you have to flash stock Samsung rom with Odin, but it will be better if you ask in the rom thread.

[Q] I747M - Telus - Won't connect to network - Weird

Hi everyone,
Weird issue with my telus locked S3. When searching for networks it only shows EXT, and nothing else. Is my phone hooped? I already tried a fresh factory restore to stock. Checked blacklist and its not black listed. My SIM works in my S4 just fine. Hallp?
Does your phone show the correct imei when dialling *#06# on the dialler?
hmm
audit13 said:
Does your phone show the correct imei when dialling *#06# on the dialler?
Click to expand...
Click to collapse
great question. It does...but with a /11 after it.
That's fine. It's the first 15 digits that represent the IMEI.
Have you tried changing the network settings to wcdma only?
audit13 said:
That's fine. It's the first 15 digits that represent the IMEI.
Have you tried changing the network settings to wcdma only?
Click to expand...
Click to collapse
understood. I didn't, but i'm doing so now.
Changed to wcdma only, rebooted. Still insists that EXT is the only network and is unavailable.
Which bootloader and modem are on your phone? Do they match the ROM?
audit13 said:
Which bootloader and modem are on your phone? Do they match the ROM?
Click to expand...
Click to collapse
Well i reflashed I747MVLUFOB1, and the weird thing is i had to do a factory reset on the phone for it to give me the default setup (when i flashed it..it seemed like it didn't delete everything). Now at least its showing "bars" of service..but will only find the EXT network (and i do mean cellular network here).
Any other ideas?
Did you change any of the modem settings using the dialler?
audit13 said:
Did you change any of the modem settings using the dialler?
Click to expand...
Click to collapse
No i didn't, whats the code to change the modem settings?
fraunhofer777 said:
No i didn't, whats the code to change the modem settings?
Click to expand...
Click to collapse
On a side note, seems like it won't connect to telus, but it will connect to Fido (and will roam on rogers with my international SIM). IMEI is not on the national blacklist..maybe its not the phone?
fraunhofer777 said:
Well i reflashed I747MVLUFOB1, and the weird thing is i had to do a factory reset on the phone for it to give me the default setup (when i flashed it..it seemed like it didn't delete everything). Now at least its showing "bars" of service..but will only find the EXT network (and i do mean cellular network here).
Any other ideas?
Click to expand...
Click to collapse
I am experiencing the exact same problem as you My problems also started after I installed the I747MVLUFOB1 (BMC/Bell version) on my Bell locked phone. Mine was a little more complicated in that I had also lost my IMEI and I had to restore my IMEI. My IMEI is now restored, phone is not blacklisted but same issue of only having EXT as a network option. If you figure it out, please let me know how you fixed it! Thank you
Hmm very strange. Well i did check the IMEI several times (along with the person that brought it to me) and couldn't figure it out so i had to give it back unfixed. I didn't end up figuring out, but i did hear of another scenario..exactly the same with an S5 they had. Wonder if there's a lot more people with this issue out there?
This tutorial saved my phone! Luckily I had a friend with the same phone.
http://forum.xda-developers.com/showthread.php?t=2374063
I suspect your NV data was corrupted during a flash aswell!
fraunhofer777 said:
Hmm very strange. Well i did check the IMEI several times (along with the person that brought it to me) and couldn't figure it out so i had to give it back unfixed. I didn't end up figuring out, but i did hear of another scenario..exactly the same with an S5 they had. Wonder if there's a lot more people with this issue out there?
Click to expand...
Click to collapse
peednas123 said:
This tutorial saved my phone! Luckily I had a friend with the same phone.
http://forum.xda-developers.com/showthread.php?t=2374063
I suspect your NV data was corrupted during a flash aswell!
Click to expand...
Click to collapse
Yea..that didn't work for me.

Samsung Note 2 (Sgh-i317m) connecting to unwanted network operators with roaming off.

Hey, So, I realized I posted a forum about this with an "anonymous" account.. And sorry about that.
Anyways, My issue is, my darn phone will drop the network, and decides to connect to a rogers or telus Network Operator instead of Bell (or just completely dropping the network entirely). I did the unlock hack through the original baseband, then updated to cyanogen 12.1 and installed the I317MVLUDNF3 modem, Same issues. I just dealt with it but am wanting to try to fix this. I recently moved to Resurrection Remix 6.0.1 (which, by the by, is amazing) and its gotten better reception, but same darn issue.
So, How do i go along to fix this? Any way through xposed or root or WHATEVER cause this makes the phone really unreliable.
Does this problem exist when using the latest stock rom?
audit13 said:
Does this problem exist when using the latest stock rom?
Click to expand...
Click to collapse
No i do not believe it did.. I could try with the stock rom again as i dont completely remember. But I am 80% sure it didn't.
Edit: Heres whats going on (this for some reason happens extremely quickly right now, usually its a half an hour or more apart..)
https://drive.google.com/file/d/0B_ujRmp9xyW_TGg4Z1lzTlAzNlE/view?usp=sharing
It could be that these custom ROMs need the latest bootloader and modem to function properly.
audit13 said:
It could be that these custom ROMs need the latest bootloader and modem to function properly.
Click to expand...
Click to collapse
I'm downloading the mvludnf4 modem, and i have the latest bootloader from 4.4.2.. So, lets see if this modem fixes it..
Any other ideas?
If it seems to work properly on a stock rom, maybe flash back a completely stock rom, flash twrp, and then a custom rom?
audit13 said:
If it seems to work properly on a stock rom, maybe flash back a completely stock rom, flash twrp, and then a custom rom?
Click to expand...
Click to collapse
Sorry for the late reply. I flashed the nf4 modem and reception is better.. Battery life sucks but oh well. I think this is a hardware issue.. I'm getting around -90 to -110dbm and 0-7 asu MAX. Maybe my antenna is busted?
Maybe try flashing back to a completely stock rom instead of just flashing the modem?
audit13 said:
Maybe try flashing back to a completely stock rom instead of just flashing the modem?
Click to expand...
Click to collapse
Well.. I don't see how the ROM could have an impact with the signal strength but I'll give it a try. Anywhere i can find a completely stock rom? The one stop shop only has stock slightly modded. Unless that will work
J.Naw said:
Well.. I don't see how the ROM could have an impact with the signal strength but I'll give it a try. Anywhere i can find a completely stock rom? The one stop shop only has stock slightly modded. Unless that will work
Click to expand...
Click to collapse
Edit. Was reading this forum
http://forum.xda-developers.com/showthread.php?t=2312921
And maybe the dialer unlock causes this? I could try getting it properly unlocked? Any insight on how carrier locks work?
I had an i317m that was locked to Telus running stock kk.
I used Odin to flash a stock 4.1.1 Samsung rom, sim unlocked the phone via the dialler menu, flashed back to the latest kk, pass the phone to a relative, and he has been using it for years on Rogers with no signal issues afaik. It may be possible that this method of unlocking causes a signal issue but I can't be sure.
In the thread that was linked, it looks like it could be a hardware problem.
Hmm.. Well I tore the phone apart and the antennas seem to be jn place.. The 4g antenna is alot smaller then the GT n7100's. Maybe that has something to do with it.. That or this phone has trouble with bell frequencies?
audit13 said:
I had an i317m that was locked to Telus running stock kk.
I used Odin to flash a stock 4.1.1 Samsung rom, sim unlocked the phone via the dialler menu, flashed back to the latest kk, pass the phone to a relative, and he has been using it for years on Rogers with no signal issues afaik. It may be possible that this method of unlocking causes a signal issue but I can't be sure.
In the thread that was linked, it looks like it could be a hardware problem.
Click to expand...
Click to collapse
Sent from my GT-N7105 using Tapatalk
The i317m should be fine with bell, Telus, and Rogers.
audit13 said:
The i317m should be fine with bell, Telus, and Rogers.
Click to expand...
Click to collapse
Then i am completely lost.. Something must be hardware related.
Not 100% sure but doesn't the phones imei number have to be registered on the network it's using. Maybe imei has something to do with it.
Just a copy and paste off the internet instead of linking to a website. I think imei is the problem.
What is IMEI?
Mobile phones, except the serial number have also IMEI number. IMEI — International Mobile Equipment Identity. IMEI — a common standard for all mobile devices, which is assigned to the phone at the time of manufacture it in the factory. It's the unique number, which is broadcasting to the carrier to authorize phone in the network. Structure of the IMEI is the same for all phones regardless of manufacturer. IMEI number is also used to track and block lost or stolen phones by the carrier, which further prevents to use of such devices. However, blocking IMEI in one carrier network have no effect in others networks.
haro25 said:
Just a copy and paste off the internet instead of linking to a website. I think imei is the problem.
What is IMEI?
Mobile phones, except the serial number have also IMEI number. IMEI — International Mobile Equipment Identity. IMEI — a common standard for all mobile devices, which is assigned to the phone at the time of manufacture it in the factory. It's the unique number, which is broadcasting to the carrier to authorize phone in the network. Structure of the IMEI is the same for all phones regardless of manufacturer. IMEI number is also used to track and block lost or stolen phones by the carrier, which further prevents to use of such devices. However, blocking IMEI in one carrier network have no effect in others networks.
Click to expand...
Click to collapse
Well.. If it was an imei issue wouldnt it be getting no signal at all since the phone can't register on the network?
Canadian carriers don't need the imei to be registered, only the SIM card.

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