Develop Bugs

[q] unlocked i-317 no signal overseas

Hello everybody,
I need your help please, I just bought a Galaxy note 2 from china, under the battery, i have GT-N7100 Model Number,
but when i am at Download Mode , my phone is I-317, i tried to install an AT&t stock frimware to make sure its original i-317, and everything was just fine, i got my phone flashed via ODIN, with original att latest frimware, but unfourtionately; i have no signal, unless i flash custome rom i got signal for 2-3 minutes and thin NO SIGNAL AT ALL, my imei is ok, my baseband is also ok, but i have no ideia what should i do in order to get it fixed,
NOTE: I always bye At&t phones and i have no problems att all in my country since its the same frequency,,, \
thank you.

Perhaps you need to check your APN settings ??
And verify you have the correct modem for your region....g

No signal
gregsarg said:
Perhaps you need to check your APN settings ??
And verify you have the correct modem for your region....g
Click to expand...
Click to collapse
Thanks for your response, but i don't have signal at all, but the phone automatically detects my apn settings, and can read the sim card, but there is no signal, it might be the modem, but i tried tmobile modem and att modem neither one was working.

same issue here

Use Verizon note 4 on AT&T

I got Verizon Note 4.
Verified that it is unlocked. Not stolen. No contract binded from Verizon store and through phone (Clean phone)
Android Version : 5.0.1
Location: Las Vegas
Insert AT&T sim card. No signal.
Change APN setting following the information on AT&T website. Still not working. No signal.
At&t store rep. said I need to l unlock the phone ( I already check with Verizon via phone and store)
Verizon rep. on phone said: I should be able to use the phone with At&t sim card
Verizon Rep. in store said : Galaxy note 4 won't work on AT&T. It needs to be rooted by an expert. Only Galaxy S5 or later version will work.
I searched websites and many say that they are using Verizon Note 4 on AT&T network (At&t sim card)
I just need to use phone and text message. No data needed.
Anybody can help me?

I was able to use SIM from AT&T before yesterday, but after trying to update the firmware using Software Upgrade Assistant tool on Windows 10, it's now stuck at 'searching for service'.

Did you change the network settings from global to lte/GSM?

I am reading this. Maybe a solution.

Did you try to insert a different carrier sim card and entering the unlock code?
---------- Post added at 09:27 PM ---------- Previous post was at 09:24 PM ----------
After reading post i see you have a att sim sim on verizon phone. This could be a problem as verizon and att dont play nice. Stupid question is did you actually pay for service?

cozmohoot said:
Did you change the network settings from global to lte/GSM?
Click to expand...
Click to collapse
I did. Not working

It is not working. No verizon sim card message is gone but still no signal.
sam369 said:
I am reading this. Maybe a solution.
Click to expand...
Click to collapse

Yes I did. Not working
cozmohoot said:
Did you change the network settings from global to lte/GSM?
Click to expand...
Click to collapse

dayse said:
It is not working. No verizon sim card message is gone but still no signal.
Click to expand...
Click to collapse
Yeah. Me either.

Did you do a factory reset after software update. Usually helps. Also mess with APN settings. Reboot after changing APN.

Problem solved.
Changing APN settings and reboot did not work. I just inserted the Verizon SIM came with the phone and made a phone call. Of course it's not activated, so I hang up when it reached Verizon automated system. Guess what, now SIM from Lycomobile works. H2O Wireless SIM also works. It means that it now can work with AT&T and T-Mobile network.

sam369 said:
Problem solved.
Changing APN settings and reboot did not work. I just inserted the Verizon SIM came with the phone and made a phone call. Of course it's not activated, so I hang up when it reached Verizon automated system. Guess what, now SIM from Lycomobile works. H2O Wireless SIM also works. It means that it now can work with AT&T and T-Mobile network.
Click to expand...
Click to collapse
I'm in a similar boat as you (4.4.4 on Cricket Wireless, wanting to upgrade to 5.1.1). I just want to make sure I understand what you did to restore service:
1. You had phone working on AT&T with an older Android version (KK?)
2. You upgraded to a newer version via the Verizon upgrade tool (I assume 5.0.1 since 5.1.1 is not yet available via the tool)
3. You lost AT&T service after upgrade
4. You were able to restore AT&T service by using an inactive Verizon SIM and making a phone call
Is this correct? TIA

ftkftw said:
I'm in a similar boat as you (4.4.4 on Cricket Wireless, wanting to upgrade to 5.1.1). I just want to make sure I understand what you did to restore service:
1. You had phone working on AT&T with an older Android version (KK?)
2. You upgraded to a newer version via the Verizon upgrade tool (I assume 5.0.1 since 5.1.1 is not yet available via the tool)
3. You lost AT&T service after upgrade
4. You were able to restore AT&T service by using an inactive Verizon SIM and making a phone call
Is this correct? TIA
Click to expand...
Click to collapse
Mostly, except that I tried to upgrade from 5.0.1 to 5.1.1, but found that 5.1.1 was not yet available via the tool, but the process of installing the software on windows 10 and maybe I also used the Verizon SIM during the process which might have messed something up. I updated the firmware to 5.1.1 by downloading the zip file in a thread here and flashed it through recovery. The network connection problem was then solved by making a phone call with the SIM came with the phone.

sam369 said:
Mostly, except that I tried to upgrade from 5.0.1 to 5.1.1, but found that 5.1.1 was not yet available via the tool, but the process of installing the software on windows 10 and maybe I also used the Verizon SIM during the process which might have messed something up. I updated the firmware to 5.1.1 by downloading the zip file in a thread here and flashed it through recovery. The network connection problem was then solved by making a phone call with the SIM came with the phone.
Click to expand...
Click to collapse
I just updated via the Verizon tool (BPA1 finally showed up) and it was, surprisingly, perfectly fine. I first backed up as much as I can (via Smart Switch and Helium app), then pulled my mSD card, left my SIM card in the phone, and proceeded to update. After the first boot stuff (app optimization, etc.) I soon saw the AT&T sign in the notification bar, and I was able to make a phone call without doing anything else. With all the reports of SIM card locking after updating I was worried that I might run into the same issue, but was pleasantly surprised that I didn't. I had to re-enter the APN setting as the upgrade seemed to have removed it, but after re-adding Cricket's APN I was able to get cellular data as well.
Thanks again for your help

You need to access the hidden menu and change your radio and modem protocols. There's a forum on XDA called domestic and internation sim or network unlock for spring but should work the same on verizon

fyi, i got my note 4 working on gsm using 2 different freedompop sims-the at&t lte sim gets lte via band 4.
the global sim based on t-mobile did get hpsda+
just change the apn

H815 can't make / receive calls but sms / data works great?

It's a UK vodafone G4 which I got unlocked and was using my O2 sim without issues. I ported the O2 number to iD Mobile (three network) and can use SMS as well as mobile data but calling doesn't work at all.
I put a Three sim in and it's exactly the same issue. The iD sim works fine in other phones. Other sim cards work fine in the G4. It's just iD and Three sims that won't make or receive calls.
I since used LGUP to install a kdz file (V20c-234-15) in the hope anything vodafone will be removed but that didn't make any difference. In the phone Settings if I check Network Status it shows the iD connections, in Status it shows Unknown Phone Number, in Network Mode it displays 2G/3G/4G, APN shows all correct iD settings. If I search for Available Networks it displays all the usual UK networks and only lets me select iD network.
Customer service said wait a few more days after porting and suggested a faulty sim (yet works in other phones) but after both iD and Three sims showing the same issue I've not much hope in their suggestions.
I know others that bought the vodafone G4 and unlocked it for Three haven't had any issues. I only found 1 other post online that has the exact same issue as me but their post hasn't updated since last month.
I don't know what to try. Other sims work, just not iD/Three. Any ideas for me to try?

I've since tried another kdz file for lollipop as I know for sure the sim worked before the number was ported before the phone was upgraded to MM.
Still doesn't work for calls, only data and SMS.
Can anyone offer more suggestions to try?
Sent from my SM-T520 using Tapatalk

djnield said:
I've since tried another kdz file for lollipop as I know for sure the sim worked before the number was ported before the phone was upgraded to MM.
Still doesn't work for calls, only data and SMS.
Can anyone offer more suggestions to try?
Sent from my SM-T520 using Tapatalk
Click to expand...
Click to collapse
This is a weird problem maybe your problem is modem or wrong kdz file. Downlaod right file and flash again and be sure that you click refrush that is makes wipe in LGUP.(I use LGUP)

cashflow67 said:
This is a weird problem maybe your problem is modem or wrong kdz file. Downlaod right file and flash again and be sure that you click refrush that is makes wipe in LGUP.(I use LGUP)
Click to expand...
Click to collapse
Thanks,
I had this problem with stock rom too though. I only started trying more kdz files in the hope that might work. Issue started the moment my number ported from O2 to iD Mobile.
Wierdly the phone doesn't like Three network sims either now and those worked fine before the number port happened.
Am really confused
Sent from my SM-T520 using Tapatalk

I need help on samsung note 4 N910v

My friend brought an original refurbish Samsung N910v android version 5.01 which was working with GSM 2G if not 3G until when I tried to update to new version android v6.0.1. In the menu>setting>about when I checked first before anything it showed me N910 F v5.01 but in boot mode Odin it was N910v.The problem started when I just typed *#9090# the phone immediately started reboot loop. I have managed to unlock the boot loader and root the phone installed custom rom version 6.0.1 by Paul Pizz rom VRU2CPJ2.r-1 but still can not have 2G or 3G GSM network. Please help to revive the phone again whether it meant to go back to 5.0.1 that would work with gsm cause am full stack now.

Have you checked to ensure you have the APN information in place? I have a Galaxy Note 4 N910V now (just got it a few days ago) and when I put my T-Mobile SIM in it from the very first time I have to manually put in the APN data - on custom ROMs it's usually picked up and there automagically but not always so, my suggestion is that you check to make sure your APN information is currently there as it should be.
Settings - More - Cellular networks - Access Point Names - make sure the one you need to be using is selected and if it's not then you'll have to put that info in manually and save it.
As for the actual model number, take the battery out and see what the model number is on the sticker in the battery compartment area - if the sticker isn't there then it could be a device that someone has done some experimenting with because that info can be changed. The sticker should be there, of course, but sometimes people take 'em out when they're mucking around with stuff, who knows.

Initially the phone is from Verizon but was working on 2G ,3G GSM network with N910F firmware version 5.0.1.it was working on airtel network until when I wanted to update. May I have the Apn settings,please

gruka said:
Initially the phone is from Verizon but was working on 2G ,3G GSM network with N910F firmware version 5.0.1.it was working on airtel network until when I wanted to update. May I have the Apn settings,please
Click to expand...
Click to collapse
The APN will be your network. Are trying to use Verizon? If so, you should have a spot to tic the VZWINTERNET. If not, then you have a sim card issue.

ziggy the how do i sort out the sim card issue ,Since phone says this sim card is not from verizon

gruka said:
ziggy the how do i sort out the sim card issue ,Since phone says this sim card is not from verizon
Click to expand...
Click to collapse
Is the sim from verizon? If you have a good account go to a corporate store and have them give you a new one. It's free.
Also, what are your APN settings and I will compare to mine. Everything works on mine.

the fone I have came from china ,am in Africa and remember I told you it was working woth N910f firmware version 5.0.1.All am asking is there anyway I could make this fone work again on Gsm network, cause all it says after re flash is the card is not from verizon

I now rooted this n910v android version 5.1.1 still no network, am in Africa where there is 2G&3G GSM network, how would I make this fone to work again with the gsm network now that I rooted. On the network bar I get a circle with a cross ,how to make this work

gruka said:
I now rooted this n910v android version 5.1.1 still no network, am in Africa where there is 2G&3G GSM network, how would I make this fone to work again with the gsm network now that I rooted. On the network bar I get a circle with a cross ,how to make this work
Click to expand...
Click to collapse
https://www.androidfilehost.com/?fid=457095661767122226
- N910VVRU2CPJ2_FullFirmware_NoAboot<--- Full Framework with no aboot so you will not re-lock bootloader, but will unroot and restore back to 100% stock. once your on the full stock check if your connections are working fine, if they are then install custom rom, otherwise change the sim card

go in settings, connections and select network mode to global, should be fine

LG G3 D851 shows full bar signals but no service

Hey guys i'm having some problems with my lg g3 d851, since the screen of my beloved lg g2 died after 2 years and a half, my friend gave me his lg g3 to use it as a tablet since the phone doesnt recognize any signal at all, right now is running the stock rom for android marshmallow, everything works fine except for the signal that either always keeps in "no service", i already try to put another sim card on the phone and its showing the same problem, already checked the IMEI on the swappa blacklist and everything is okay, here are a few screenshots, any thoughts on how to solve this problem would be very appreciated thank you!

Have you modified the APN settings under mobile networks?

kfcherry said:
Have you modified the APN settings under mobile networks?
Click to expand...
Click to collapse
hi thanks for replying, yeah i already modified the APN settings under mobile networks with the APN of my carrier that is IUSACELL (AT&T México) and is still showing the same problem "no service" or "searching"

I had the same problem, try installing another modem, or send me an pm, I have the same mobile company (right now I'm having some problems with the at&t mexico)

I am having a similar problem with my d851 30g. It isvnot rooted and running stock android 6.0 tmobile rom. I am with movistar (mexico) it will have signal and be on the network and then eject the sim saying invalid then reset. Did factory reset. Movistar sim worked for about an hour and then same thing. Have a s from telcel switched and no problem till this Morning. Did the same thing and restarted. Recognized the sim and all fine. I am new to this and could use a little help. As it is connecting with the other sim and not my movistar sim. Possible software issue or corrupted sim?
Thanks in advance,
Alex miller