device not yet registered

hi everyone
i've got a problem with my g2 d80220c when i tried to update from kitkat to lollipop, when i searchh for an update it says your device is not yet registered , and when i use lg support tool the application stops working .
some say i've got to get an at&t simcar but i can't get when caus am not in the us .
please help me fix that given that i dont want to root or mess up my phone and thnx:)

How do you fix Not Registered On Network?

So as of saturday my unlocked TMobile Note 4 stopped working as a phone, and won't let me make calls.
Information:
-Was on Dr. Ketan L3 version of his rom when it stopped working
-Using the N910T on AT&T
-IMEI is fine and not damaged, both numbers match (using *#06#)
-It shows bars, but when I go to make a call "Not Registered On Network"

What I've Done:
-Flashed Stock Firmware via Odin (Autoboot, and F.Time Rest checked)
-Factory Reset after odin flash
-Checked APN
-Set on LTE/WCDMA/GSM
-Searched for Networks, finds them, but when I choose AT&T it takes forever and then finally kicks me out and then in notifications, I get the "Not Registered to Network"
-Did the remove the battery thing, and removed sim
-Went to AT&T and got a new sim, worked for 1hr (sporadically) and then went back to "Not Registered on Network"
-At the store I was on phone with AT&T tech trying to troubleshoot the problem and that is when it was working shortly
-Called T-Mobile and checked to see if they blocked my IMEI number, nope they didn't, couldn't help me out further than that
-AT&T was showing that it was a Note 4 so not having that coming up as a Blackberry issue that some reported, so that's not it
-*#0011# shows service limited, but it is unlocked and everything is fine, the IMEI is good, and all is well but the limited service
-Put it in Airplane mode and woke it back from there after 5+minutes
-cleaned the connectors on the sim (new sim anyways so shouldn't really need them)

I'm running out of options, the only thing I can think of being the problem is that I might have started out using this phone on COD2, and when I flashed a COG2 firmware it didn't like that and so my phone's account settings didn't fully transfer.
Also I was messing around with the bands settings (*#2263#) what should they be on? Automatic, LTE/GSM only, or what?

How to fix not registered on network

HELLO

please how to fix not registered on network in my galaxy ace style SM-G310HN :crying::(

THANKS for Help

GT-I9300 Unusual Version of "Not Registered To Network"

Hello. :)

I have read as many posts/forums that I can find on XDA (plus or minus a few I may have missed) and I have not found something matching my situation. While there are many revolving a missing, corrupted or invalid IMEI, this does not seem to be my case, at least according to my phone.

I am new to rooting, posting on XDA, and unlocking a phone

The beginning:
I had a locked, unrooted GT-I9300. Out of nowhere, I start getting "not registered on network." I had already decided to go with a different carrier/network and purchase a different phone. (The phone was on a contract that I did not continue after it expired. ) Circumstances necessitated that I keep this phone and just use a different carrier. I figured I would have to fix the "not registered on network", unlock the sim, and root the phone (not necessarily in that order.) I looked up several different articles , both through XDA and Google, that talk about the "not registered on network."

What I have done:
None of the non-root methods worked for my phone. According to the phone, I still have my original IMEI and S#. At this point I decided to root my phone. I have TWRP recovery and am currently running on the original stock ROM as I didn't want to risk corrupting (maybe further corrupting) my IMEI, etc. I will list full phone status below. After rooting, I tried to use GalaxSim unlock app (an older version than what is at the Play Store, due to it not being available in my country due to laws.) It states that my IMEI, S#, etc are: undefined. It also says it is unable to read my nv data.


I am afraid to try any of the nv data fixes with out double checking first, as according to my phone my IMEI and S# are correct.

Full Phone Stats:
Model #: GT-I9300
Android Version: 4.3
Baseband Version: I9300UBUGMK1
Kernel Version: 3.0.31-2320216
se.infr@R0301-08 #1
Wed Dec 18 03:37:30 KST 2013
Build Number: JSS15J.I9300UBUGML1_CellOnell_v2.0

Network: Unknown (according to phone information, branded CellOne phone, have both CellOne sim and Straightalk sim)
Signal Strength: -103dBm 6 asu (as I type this)
Mobile Network Type: GPRS
Service State: Out of Service
Roaming: Not on Roaming
Mobile Network State: Disconnected
Phone Number: Changes upon which SIM I put in the phone. Original CellOne SIM has no number connected to it. Straightalk
pops up the right number for the SIM card.
IMEI State: Original IMEI that came with the phone (found in the phone, on the information box, and back)
IMEISV: 01
IP address, WiFi Mac Address, Bluetooth address: Will supply if needed
S# State: Original S# that is for the phone (found in the phone, on the information box, and back)
Device Status: Custom

As stated above, my phone was giving me the network connection error BEFORE I messed with rooting, etc.

moto E xt1022 Brazil signal and no service, registered.

MOTO E XT1022:D
MY FRIENDS, and allowedme to just call you that cause u have been helping me a lot already, but it seems like i just got to request direct support from the best. and sorry for calling you just like that but im just needing some really good help!!!! idont even really know how to really thread but ok, moto e xt1022, got tried a lot, like im just getting crazy know, here the ISSUE: after some misterious process de phone has not signal, but there is nothing wrong with my signal, im registered on carrier, but even showing full bar indicateor says not service on configurationes, please help, thanks. i flashed, with moto tools, with mfastboot, im getting crazy with those motos g and e dudes...

Samsung Galaxy S4 Network Switching "Not Registered On Network"

Hello,

I have Samsung Galaxy S4 i9500 and the problem which I am facing is regarding network. The problem is that the network I am using has weak signals inside my house but still there are signals.

Now what my mobile does on weak signals is keep on switching network operators to other carriers and when I try to make a call it says not registered on network although it is showing signals.

I tried to find a solution online which said go to network operators and choose your network manually which did worked but due to low signals sometimes my mobile goes out of coverage and then samsung s4 again changes the settings from manual to automatically and again it switches to another network where Not Registered On Network problem arises.

Do we have any method or app other than manual selection of network operator to lock a operator down or a method which does not allows others networks to be connected because on my LG P-700 when I try to switch networks it says we could not connect that is why there is no issue on that set but my s4 shows signals while it is not registered on any network. Confusing.

So is there a lock or method do let me know.

Thank You

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