HELP! 4g LOST / not working
THE SHORT OF IT: I flashed a custom ROM & kernel. They didn't work properly, so I flashed my nandroid to get back to rooted stock. NOW I HAVE NO 4G or signal of any kind (wifi works)!!!!!!
THE LONG OF IT:I'm in South Korea using the Galaxy Note 2 on the carrier LG with their U+ LTE service. As far as I could see and have been told my phone ONLY uses 4g (no 3g or other options to check). I was advised to flash a Tmobile or ATT Rom (I chose the Tmobile AOKP) as our U+ phones don't have their own Roms & Forums and I flashed a custom kernel from sjkoon a developer posting kernels that work for our phone. Others have done the same thing and reported no problems. After flashing, the new Rom & kernel, the phone booted in the Google startup helper I could not gain access to any signal or wifi to access or create a gmail account.
So, I nandroided back to stock (rooted, mind you, using chainfire's exynos exploit) but my 4g won't work, only wifi does. So, I have NO way to make/receive calls. I've verified a number of pieces of information through various avenues and have the following:
PHONE INFO
My Access Point Names says "LG U+" with "internet.lguplus.co.kr" underneath. There is no option to change it or edit it, just a radio button with no other options (is this is fine?). I was advised in another forum (http://forum.xda-developers.com/showthread.php?p=36895160#post36895160) to change mmsc's value to http://omammsc.uplus.co.kr:9084, but I dont' know where that option is to change it, or if this is a problem.
I also used the the "Phone Info" app and got some of these readings:
In Telephony, have a Device ID, my Network type is 3, Sim State 5, it shows I have a SIM operator and country, Serial Number Subscriber ID, etc. The only things that MAY be strange (I don't know what their original values should be) are that Call State, Data Activity and Data State are all 0 and my Network Operator Name, Network Operator and Network Country ISO are just blank. Even if I wanted to change any of these I have no idea how...
PLEASE HELP & THANK YOU!
It's strange. I spent the night/morning searching forums for a solution but not sure exactly what to do. Please, help me or point the way to fix this issue if you know how and thank you very much. I'm willing to buy you a beer or buy your newest app, say thanks on all your posts for the next month, whatever! Hehe. ...:crying:
FELLAS,
My phone is i747 originally from Rogers Canada and I've unlocked the sim, so I can use it with Virgin Mobile (Bell) Canada. I have been running cynergy roms all along until this last r484 build cropped up. I am trying to figure out installation options with it. ROM installer detects my board as ATT and asks to choose my carrier which is Virgin Mobile (basically Bell) then I install this way I cant send or recive calls my Network options are very limited to manually make selections. During set up phone gets locked up in a SIM activation mode (I installing this rom both ways with Global APN selected and not). Would anyone advise if this is due to unlocked phone and what options should be selected during installation in cases like this? If phone is unlocked can I assume rome installation should be for the current carrier and not the one the phone was originally design for?
Thank you.
I'm using the E975 and I've unlocked the bootloader, installed CM11 on it.
However I realised that the ROM did not detect any signals. I couldn't make calls or SMS.
I had to manually go to the network settings and find the carrier (Singtel) to register everytime I start the phone.
I then flashed savvy 4 ROM to see if the network was any better. It was, but then I was limited to GSM only. I couldn't get 3G or 4G.
Before I unlocked the bootloader, I had 3G and 4G signals.
Then I decided to KDZ back to stock ROM. I had network but only limited to GSM.
I realised my phone could only detect GSM signals from Singtel, M1 and Starhub. I couldn't see 3G or 4G.
I don't know what to do now. I need help. Must I flash any basebands or modems or anything? Thanks
I recently just got a plan on the Canadian cell service provider, WIND, on my Roger's phone. I unlocked it and make it able to use AWS bands, which is what WIND is on. The phone read WIND fine when I was getting the plan, but only a few hours later the signal died and now I'm getting "Your SIM does not allow a connection to the network".
I tried using ODIN and flashing back to stock 4.1.1, but that has not worked. I don't know what to do right now.
I also tried turning the radio on and off, and that has not worked.
I'm stumped. Can anybody help?
You have to reapply the AWS mod the moment you flash another modem.
My phone was was modded and has had SEVERAL different modems and never had to re apply the mod is a hardware firmware flash and should stick. You could try I suppose but it may b with all the ownership changes with carriers here they may have changed frequencies. Like Telus screwed 90% of Public mobile customers.
When I modded mine I went through QPST there is a thread in development.
Sent from my AWS enabled I317m ❤ Running DN3 v5.
AgentTran said:
I recently just got a plan on the Canadian cell service provider, WIND, on my Roger's phone. I unlocked it and make it able to use AWS bands, which is what WIND is on. The phone read WIND fine when I was getting the plan, but only a few hours later the signal died and now I'm getting "Your SIM does not allow a connection to the network".
I tried using ODIN and flashing back to stock 4.1.1, but that has not worked. I don't know what to do right now.
I also tried turning the radio on and off, and that has not worked.
I'm stumped. Can anybody help?
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Blacklisted maybe?
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
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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
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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
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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