Develop Bugs

No Service - HELP!

A friend has given me a Galaxy Note 2 GT-N7105 to root and change roms, I have put a few custom roms on it and rooted it, but I cannot get it to connect to any network. It didnt connected before I did any of this. I put a new o2 sim in it.
Does anyone have any suggestions on what to do now to get it to connect to o2.
I'm downloading a stock rom from here http://forum.xda-developers.com/showthread.php?t=2032849 uk vodaphone, so im going to try that when it finishes.

Did he flash a n7100 rom?
Sent from my GT-N7100 using Tapatalk 2

dingokevin said:
Did he flash a n7100 rom?
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
I'm not sure what was done to the phone before it was given to me to sort out, but I can only imagine what pain this phone suffered in her hands of installing any rom on it with words galaxy note 2 in the title.

Check imei is displaying correctly
Compare one from dialing *#06# with one in backside of note (under battery)
Sent from my GT-N7100 using xda premium

dr.ketan said:
Check imei is displaying correctly
Compare one from dialing *#06# with one in backside of note (under battery)
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Yes the IMEI number is the same as the one under the battery, my baseband version is N7105XXDMD1, I tried a couple of stock roms using odin, I am now connected to the o2 network, and I have full signal. However I still have the same error when I try and make a call it says mobile network not available. Im at a loss now as to what to try next. I also tried flashing a few UK modems, none of them made any different apart from turning my baseband version to unknown. Any help would be much appreciated. Im thinking maybe instead of flashing to the latest stock rom, maybe I should look for the oldest one and let it do OTA updates. Does anyone have a link to a default or old stock rom for this phone ? Or know how to fix this problem?
I found a post here which looked promising but it does not support this phone
http://forum.xda-developers.com/showthread.php?t=1918601

Anyone? Surely someone must know how to fix this.

TopGeartm said:
Anyone? Surely someone must know how to fix this.
Click to expand...
Click to collapse
AFAIK, all the N7105's currently in the UK are from either EE or 3, and are almost certainly network locked to them. If the device has been flashed with a generic ROM without being SIM unlocked, that could be the root of the problem.

FloatingFatMan said:
AFAIK, all the N7105's currently in the UK are from either EE or 3, and are almost certainly network locked to them. If the device has been flashed with a generic ROM without being SIM unlocked, that could be the root of the problem.
Click to expand...
Click to collapse
I tried this method
Just dial the following keys *#197328640#
Main Menu > [1] UMTS > [1] Debug Screen > [8] Phone Control > [6] Network Lock > Options [3]Perso SHA256 OFF > (after choosing this option, wait about 30 seconds, then go back one step by pressing the Menu button then select Back, now you are in [6] Network Lock then choose [4] NW Lock NV Data INITIALLIZ ..... wait for a minute then reboot your phone... enjoy!!!
but never see an option of NW Lock NV Data INITIALLIZ

Try this
https://play.google.com/store/apps/...SwxLDMsImNvbS5zcG9ja3kuZ2FsYXhzaW11bmxvY2siXQ..

dr.ketan said:
Try this
https://play.google.com/store/apps/...SwxLDMsImNvbS5zcG9ja3kuZ2FsYXhzaW11bmxvY2siXQ..
Click to expand...
Click to collapse
unfortunately the phone is showing as unsupported i tried looking for other similar apps but couldn't see one for this phone ], I dont suppose you know of any others, or maybe one that will tell me if its locked, or if it is locked what network its locked to, so i can get a sim for that network

I wonder if there is any mileage in doing a manual search for mobile networks to see if any of them show up?

scote said:
I wonder if there is any mileage in doing a manual search for mobile networks to see if any of them show up?
Click to expand...
Click to collapse
if i search for mobile networks I can see them appear, and I can connect to o2, it says connected. however, i still have the mobile network not connected error if I try to make a call or send a text

[Q] UK 4G not working

So far, managed to root my Korean F240L, still running 4.4.2 for now until there's a root for Lollipop. Haven't managed to see any 4G signal in the UK since I got it , get 3G sporadically but the reception is way worse than the same sim card in my old Nexus 4. Network is Giff Gaff (ie O2) , should I consider going for a UK baseband update ?

Right ok, since found out that the Korean version doesn't support UK 4G. Is it possible to change this ?

far0n said:
Right ok, since found out that the Korean version doesn't support UK 4G. Is it possible to change this ?
Click to expand...
Click to collapse
If the phone doesn't support the LTE bands your desired carrier offers, then no, you're boned.

Think I'm in a similar situation
Got an E986 from Germany running 4.4.2 KitKat (E98620a-EUR-XX), it works great on 3G in the UK but NO 4G at all on my Three 4G Sim card. Tried enabling it in the hidden phone menu - no joy.
I thought I would be able to get 4G working by rooting and re-flashing but by god I cannot get this thing rooted despite my best attempts from trying all the techniques on here
Thought if I downgraded to 4.1.2 then I would have better luck rooting, but can't seem to download a .kdz that isn't corrupted when I try the LG FlashTool

gr00veg0d said:
Think I'm in a similar situation
Got an E986 from Germany running 4.4.2 KitKat (E98620a-EUR-XX), it works great on 3G in the UK but NO 4G at all on my Three 4G Sim card. Tried enabling it in the hidden phone menu - no joy.
I thought I would be able to get 4G working by rooting and re-flashing but by god I cannot get this thing rooted despite my best attempts from trying all the techniques on here
Thought if I downgraded to 4.1.2 then I would have better luck rooting, but can't seem to download a .kdz that isn't corrupted when I try the LG FlashTool
Click to expand...
Click to collapse
You cant change the bands of a phone by flashing other things. If it doesnt work it most likely wont be able too.

How to enable video calling on unlocked SM-N910A On T-Mobile network

I am using unlocked SM-N910A On T-Mobile network. I am trying to enable video calling on Phone app. I checked setting under Phone app but did not find anything.
I also noticed that when I go to Settings -> More Settings - I see first 'Network or Sim card error' popup with ok button and after that other options (i.e caller id, call forwarding,auto redial etc) are loaded on screen.
Any input will be great if this can be done or limitation.
APN is fast.t-mobile.com
Settings -> Connections- > Mobile networks - > Mobile Data -> "Enhanced 4G LTE services" is checked.
ANDROID VERSION
5.0.1
BASEBAND VERSION
N910AUCU2COC6
KERNAL VERSION
3.10.40-4160876

I'm on ATT using the same phone, and I don't think ATT supports video calling on their phones. I don't know for certain, but my last 4 phones were all ATT and none of them had native video calling. I always had to use apps like Tango. I could just be in the same boat as you and just don't know how to activate the feature or something.
Sent from my SAMSUNG-SM-N910A using Tapatalk

spexwood said:
I'm on ATT using the same phone, and I don't think ATT supports video calling on their phones. I don't know for certain, but my last 4 phones were all ATT and none of them had native video calling. I always had to use apps like Tango. I could just be in the same boat as you and just don't know how to activate the feature or something.
Sent from my SAMSUNG-SM-N910A using Tapatalk
Click to expand...
Click to collapse
To: spexwood,
Thank you for reply.
I also noticed there is no wifi calling option. there is also "sim card or Network error" while setting forward calling.
Based on following links,it seems it is a limitation
https://www.att.com/shop/wireless/features/wifi-calling.html
https://www.att.com/esupport/article.html#!/wireless/KM1062034
5.0 is latest version on note 4? i tried to check update and it says u have latest version.
https://www.att.com/esupport/article.html#!/wireless/KB425932

uhs74 said:
To: spexwood,
Thank you for reply.
I also noticed there is no wifi calling option. there is also "sim card or Network error" while setting forward calling.
Based on following links,it seems it is a limitation
https://www.att.com/shop/wireless/features/wifi-calling.html
https://www.att.com/esupport/article.html#!/wireless/KM1062034
5.0 is latest version on note 4? i tried to check update and it says u have latest version.
https://www.att.com/esupport/article.html#!/wireless/KB425932
Click to expand...
Click to collapse
5.1.1 is the latest version, but the only way to OTA is to use an ATT sim card. You can Odin the files though.
I recommend updating just because 5.1.1 is much stabler, but I don't think it'll help you. I'm on 5.1.1 and as I said, I can't find any way to use video calling.
Link
http://forum.xda-developers.com/showthread.php?t=3230993
Sent from my SAMSUNG-SM-N910A using Tapatalk

spexwood said:
5.1.1 is the latest version, but the only way to OTA is to use an ATT sim card. You can Odin the files though.
Link
http://forum.xda-developers.com/showthread.php?t=3230993
Sent from my SAMSUNG-SM-N910A using Tapatalk
Click to expand...
Click to collapse
So for any future update on this phone, is it mandatory to use At&T sim card to get update to get if rom OTA? is Kies option?
I m using under T-Mobile network. ( I have no plan to be At&T customer)
Also are following points are know limitation of Note 4 AT&T?
1) No wifi calling option
2) No Video call
3) Call forwarding option always get "Sim or Network error" ( i tried to change sim card ,factory reset but no luck)

uhs74 said:
So for any future update on this phone, is it mandatory to use At&T sim card to get update to get if rom OTA? is Kies option?
I m using under T-Mobile network. ( I have no plan to be At&T customer)
Also are following points are know limitation of Note 4 AT&T?
1) No wifi calling option
2) No Video call
3) Call forwarding option always get "Sim or Network error" ( i tried to change sim card ,factory reset but no luck)
Click to expand...
Click to collapse
I can't answer any of the last 3 questions, but can the first few.
OTA (Over The Air update) is not possible without having an ATT sim and being connected to the ATT network.
With a different sim, the phone will ALWAYS say that no update is available and that your phone is up to date when it isn't.
Kies will act similar as to not having an ATT sim. ATT doesn't upload their updates to Kies.
The only way for you to update would be:
1) borrow someone's ATT sim card and use it to connect to the ATT network
2) go to a Best Buy with a Samsung Experience area and ask them to update your phone. They'll do it for FREE and it doesn't matter where you got your phone. You do need to tell them that you're using the ATT phone on a different network. This will male sure they flash the correct firmware and not brick your phone.
3) Use the latest Odin file to update your phone yourself. This is basically what they'll do at Best Buy, except that you'll be solely responsible for the outcomes of your phone. The Odin files are posted in the ATT Note 4 General thread. Just do a search for Odin.
Sent from my SAMSUNG-SM-N910A using Tapatalk

spexwood said:
I can't answer any of the last 3 questions, but can the first few.
OTA (Over The Air update) is not possible without having an ATT sim and being connected to the ATT network.
With a different sim, the phone will ALWAYS say that no update is available and that your phone is up to date when it isn't.
Kies will act similar as to not having an ATT sim. ATT doesn't upload their updates to Kies.
The only way for you to update would be:
1) borrow someone's ATT sim card and use it to connect to the ATT network
2) go to a Best Buy with a Samsung Experience area and ask them to update your phone. They'll do it for FREE and it doesn't matter where you got your phone. You do need to tell them that you're using the ATT phone on a different network. This will male sure they flash the correct firmware and not brick your phone.
3) Use the latest Odin file to update your phone yourself. This is basically what they'll do at Best Buy, except that you'll be solely responsible for the outcomes of your phone. The Odin files are posted in the ATT Note 4 General thread. Just do a search for Odin.
Sent from my SAMSUNG-SM-N910A using Tapatalk
Click to expand...
Click to collapse
Thank you for your reply.

Hi, everyone. I am using an unlocked at&t phone and trying to figure out how to use tmobile video calling on it. Is there a possible way to do it? Thanks.

SUCCESS:: LTE Band 17 (AT&T / MVNO) working on G930v

Hello, All.
I've successfully completed my quest in getting my Verizon Galaxy S7 to work with AT&T's primary LTE band; Band 17.
At first I was using the PE1 firmware with root. I first used Phone INFO (for Samsung) app to access the service code 2263. On PE1, only the factory Verizon-supplied bands were showing as supported. Band 12/17 were not showing in the service menu.
I took my chances and flashed the G930U firmware (found on the AT&T S7 forum of all things) and booted the phone with my AT&T SIM card. I ran LTE Discovery and achieved profit. Band 17 was working with the same signal as the iPhone 6S the SIM card came out of.
Also, the 930U firmware completely debrands the phone, which is perfect since I'll be using it on AT&T. After I confirmed band 17 I proceeded to root using the normal method of flashing the engboot and installing the root/SuperSU package per the root instructions. I did not use the Verizon PE1 debloater/fixes .zip files to make necessary tweaks, post root. I performed the tweaks manually (wifi fix, CPU governer: interactive, and SecurityLogAgent) .. Let me know if I'm missing anything in those regards please.
The ONLY thing I can't do now is view all the LTE bands in 2263 Service Mode. I get a "RAT Selection option: is restricted".. I want to see if all LTE bands are unlocked now. If you know of another way to see all the supported LTE bands, please let me know!
I now have exactly what I was set out to accomplish and it's great. The S7 is replacing my iPhone 6S on AT&T and I will be buying a Note 7 to replace the S7 on Verizon. If/when root is achieved on the Note 7 I will do the same and replace the Note 7 on Verizon with the iPhone 7 (I cycle my personal/business phones as a guilty pleasure if you can't tell already)
Screen shots attached

nice work, thanks for taking the plunge

Just did the same on a friend's S7 that he was trying to get on Cricket's LTE, as the VZW firmware kept him on HSPA+ at most. All I had to do was flash the AT&T firmware and bam, LTE. I forgot to check what band it was on but at least it's an additional proof of concept.
Thanks for the info!

Can u link that ROM

I haven't tried with Samsung, however, most phones with Qualcomm modems can be accessed via QXDM or similar PC software. Often the so called hacked HTC modem driver will allow QXDM to communicate with the phone.
There are XDA threads detailing how to access the appropriate LTE bands and selecting bands of choice using the above method.
AT&T and VzW both use bands 2 and 4, so you probably have all the bands that you need covered already.

xdadevnube said:
I haven't tried with Samsung, however, most phones with Qualcomm modems can be accessed via QXDM or similar PC software. Often the so called hacked HTC modem driver will allow QXDM to communicate with the phone.
There are XDA threads detailing how to access the appropriate LTE bands and selecting bands of choice using the above method.
AT&T and VzW both use bands 2 and 4, so you probably have all the bands that you need covered already.
Click to expand...
Click to collapse
The factory Verizon firmware did NOT have LTE band 12 or 17 unlocked so I was only getting HSPA+ with little spurts of band 2/4 LTE every once in a while with the AT&T SIM card in it. Flashing the 930U unlocked band 12/17 for me so I have full LTE coverage in the same spots where I only had HSPA+ before.

parin11 said:
Can u link that ROM
Click to expand...
Click to collapse
http://forum.xda-developers.com/att-galaxy-s7/how-to/xda-community-love-g930u-t3415875

One thing to note also is that the G930U firmware auto detects your carrier settings and has you restart after first boot. I'm assuming it will unlock correct bands depending on the carrier SIM you use. The G930U firmware does NOT, however, like the Verizon SIM. Upon updating carrier settings with a Verizon SIM installed, the device will reboot into recovery. Every time you power on the device it will prompt you to update the carrier settings and will have you reboot again.. back into recovery. Rinse and repeat. I had to refresh the U firmware to get my band 12/17 back after putting the Verizon SIM in.

MrBaltazar said:
One thing to note also is that the G930U firmware auto detects your carrier settings and has you restart after first boot. I'm assuming it will unlock correct bands depending on the carrier SIM you use. The G930U firmware does NOT, however, like the Verizon SIM. Upon updating carrier settings with a Verizon SIM installed, the device will reboot into recovery. Every time you power on the device it will prompt you to update the carrier settings and will have you reboot again.. back into recovery. Rinse and repeat. I had to refresh the U firmware to get my band 12/17 back after putting the Verizon SIM in.
Click to expand...
Click to collapse
That happened to me when I rooted on the ufirmware forced to reboot.
Sent from my SM-G930U using XDA-Developers mobile app

MrBaltazar said:
Hello, All.
I've successfully completed my quest in getting my Verizon Galaxy S7 to work with AT&T's primary LTE band; Band 17.
At first I was using the PE1 firmware with root. I first used Phone INFO (for Samsung) app to access the service code 2263. On PE1, only the factory Verizon-supplied bands were showing as supported. Band 12/17 were not showing in the service menu.
I took my chances and flashed the G930U firmware (found on the AT&T S7 forum of all things) and booted the phone with my AT&T SIM card. I ran LTE Discovery and achieved profit. Band 17 was working with the same signal as the iPhone 6S the SIM card came out of.
Also, the 930U firmware completely debrands the phone, which is perfect since I'll be using it on AT&T. After I confirmed band 17 I proceeded to root using the normal method of flashing the engboot and installing the root/SuperSU package per the root instructions. I did not use the Verizon PE1 debloater/fixes .zip files to make necessary tweaks, post root. I performed the tweaks manually (wifi fix, CPU governer: interactive, and SecurityLogAgent) .. Let me know if I'm missing anything in those regards please.
The ONLY thing I can't do now is view all the LTE bands in 2263 Service Mode. I get a "RAT Selection option: is restricted".. I want to see if all LTE bands are unlocked now. If you know of another way to see all the supported LTE bands, please let me know!
I now have exactly what I was set out to accomplish and it's great. The S7 is replacing my iPhone 6S on AT&T and I will be buying a Note 7 to replace the S7 on Verizon. If/when root is achieved on the Note 7 I will do the same and replace the Note 7 on Verizon with the iPhone 7 (I cycle my personal/business phones as a guilty pleasure if you can't tell already)
Screen shots attached
Click to expand...
Click to collapse
With flashing the 930u firmware being possible would it be possible to then get twrp recovery working? Debating on trying just because I have an extra s7

eg2_Justin said:
With flashing the 930u firmware being possible would it be possible to then get twrp recovery working? Debating on trying just because I have an extra s7
Click to expand...
Click to collapse
Unfortunately no. Bootloader is still locked and we cannot flash custom recoveries at this time.

MrBaltazar said:
Unfortunately no. Bootloader is still locked and we cannot flash custom recoveries at this time.
Click to expand...
Click to collapse
Ahh I figured that was the case

Currently on stock. I get LTE with a att sim card until i place a call then it reverts to 3G. Any known issues with this method? I would really enjoy having full LTE coverage if possible

XxCyberHackerxX said:
Currently on stock. I get LTE with a att sim card until i place a call then it reverts to 3G. Any known issues with this method? I would really enjoy having full LTE coverage if possible
Click to expand...
Click to collapse
Have this issue as well on VZW mvno.

Illogi.xbone said:
Have this issue as well on VZW mvno.
Click to expand...
Click to collapse
I'm hoping this method can eliminate that issue. I just need multiple people to confirm this works (too scared to try it without feedback)

XxCyberHackerxX said:
I'm hoping this method can eliminate that issue. I just need multiple people to confirm this works (too scared to try it without feedback)
Click to expand...
Click to collapse
The issue I have is with the U Firmware. However, the method does not trip knox. Make a Smartswitch backup and give it a go. If it still doesn't work flash back to AT&T stock and restore from your backup.

OP: if you haven't been able to allow the RAT selection i'd suggest this.
go to Service mode main menu (either broadcast cmd 27663368378 or app like shortcut master), 2. ue setting > 1. setting > 1. protocol > 5. sim > 4. EF_RAT Free Supporting > 1. EF rat free supporting on (select even if it shows on)> now RAT Free Support.
Then business as usual.

XxCyberHackerxX said:
Currently on stock. I get LTE with a att sim card until i place a call then it reverts to 3G. Any known issues with this method? I would really enjoy having full LTE coverage if possible
Click to expand...
Click to collapse
Your call is being transmitted over LTE so the data reverts back to Hspa during the call. Mine does this but returns to LTE after I hang up.

MrBaltazar said:
Your call is being transmitted over LTE so the data reverts back to Hspa during the call. Mine does this but returns to LTE after I hang up.
Click to expand...
Click to collapse
Thanks for the explanation. So at this point what is the point of this method? Does unlocking the band lead to a stronger signal?

XxCyberHackerxX said:
Thanks for the explanation. So at this point what is the point of this method? Does unlocking the band lead to a stronger signal?
Click to expand...
Click to collapse
You unlock the band that AT&T primarily uses for LTE. Much more LTE signal throughout the nation on band 17.

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