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[Q] Rings once then get a no service icon at the top

I just purchased the sII skyrocket 2 weeks back. About every 2 days the phone would stop receiving calls. When i get a call it would ring a half ring and then at the top where it shows the signal would have a no sign on it like there was no service. Once its goes in to this mode it would stay in it until i reboot the phone. The problem is that i never actually know who is calling because it never logs a missed call. This is the first i have seen this on any andriod phone. Here is some additional info, Stock Rom, Phone is rooted, i have the following apps frozen using TBP
Allshare
At&T code canner
At&T hotspots
At&T navigator
At&T ready 2 Go
Featured Apps
Kies Air
Kies via Wifi
Kobo
NFC service
NFC Test
QIK Lite
QuickOffice
Social Hub
Tethering Manager
Any thoughts? I should add that its not specific to one contact it will happen to anyone that calls, i have tested this calling from my wifes cell to mine when it was in this mode and saw it happen constantly. Rebooted sitting in the same place phone received calls.

no feedback yet from community but i thought i would post an updated.
I contacted AT&T that suggested it could be the SIM card, I went to the store tonight and changed out my SIM. I will update this if the issue goes away so in case some one has something similar they know what a potential fix could be.

Interesting.
Did you get a new SIM card when you get the Skyrocket as well?
I know they issued me a new SIM card at purchase because of the LTE upgrade.

yep they gave me a new sim card when i purchased it said the old one wasn't compatible. So the one i just received replaced the new one that is about 10 days old.

just to update this, this seemed to have fully fixed my issue.. since i swapped the sim there have been no issue

Your SIM was probably dying out, it happens.
Glad to see your issue was fixed, I was thinking you were having LOS, same as the Sprint SGS II.

phone HATES my SIM CARD "unregistured sim"

My phone HATES my SIM CARD, First off i rooted my phone, its fully unlocked and has been just fine for over a month. I'm using FIDO but its an unlocked Rogers phone. (SGH-I727R model) and original FW and everything. made a couple of phone calls in the morning and the when i got home i noticed that my phone displayed "unregistured SIM" so i tried reloading sim card, reboot and so on over and over again. and it didnt work. so put the sim card in my 4year old phone, and it worked.
try calling fido aswell as rogers.. they said, sim card might be old and there is a conflict with the NEW phone. so i went to futureshop talked with the dude got the NEW sim card and tested it out with no success. again tried it with old phone, WORKS..
now you think maybe the phone might be locked somehow... NOPE. i even tried dude's sim card and he is on another network. (NOT rogers or fido) WORKED with his sim, proof my phone is totally unlocked to any carrier.
NEW SIM Card Doesnt work with my phone but worked perfectly with buddies SIM CARD on another carrier?!?!... lol
and now it shows "no service"
PLEASE HELP.

Update
i have just formatted, cleared cache and factory reset and it still says the same ****. no service... anyone help? i'm dead in the water here..

I had the same problem, I had to switch carriers then my phone started working properly, Honestly I think its the company...

Update
well, it looks like i hit rock bottom. i even installed the new ics rom and its still doesn't take my SIM card. I'm pissed. i need to dump this phone and get a working one. I can't switch over to rogers, I hate them. and when i go on vacation this phone will be a brick if i cant insert everyone elses sim cards around the world.
and i dont think its the company's fault. i have a feeling its because its rooted or something along those lines.
maybe i will wait for the new galaxy sIII and dump this ****. $$560 wasted. i feel soo stupid for getting this phone.

hi,
What have you used to unlock sgh-i727? I have one and need to unlock it so can switch to other provider then ATT.

when i bought the phone it came unlocked. you must goto a website and give them your imei # that is on your phone. and they will sned you a unlock code upto 2 hours later.. DONT try and guess the code. and you will have to pay a fee but it will be minimal. $3-10
Final UPDATE, i went to rogers and got the phone on a contract for $50 and now i think i will give this to my mother to use for pics and ****. i have not a clue what to do with this thing.

And now it works
How reliable is that, i went out and bought a second phone from rogers and after a couple of days of my old phone not working with any sim card, Now it works with both rogers and Fido. Now i am stuck in a 3yr contract and have 2 of these phones. anyways i will try and get rid of my stupid contract. its only been a couple of days and "buyers remorse" law states that you can get out of any contract within 15 days of when the contract was signed.

Same Here
Strange - I had the EXACT same thing happen to me as well. Funny thing is it happened the same day as your first post about this issue on Jan. 25. I am on FIDO as well and had a working, unlocked i727R I bought off eBay from Basatne Electronics.
It was unrooted and working perfectly for a month and a half. All of a sudden I got ‘no service’ and sometimes ‘unregistered sim’ when I rebooted. I tried 6 different sim cards from FIDO and Rogers that worked on other phones and same thing. I cleared cache and did a reset. Same thing. I brought it to FIDO and Rogers and tried their demo sim cards in it. Same thing.
Finally I called Samsung to sent it back to them for ‘repair’. They sent me a UPS label and I sent it to Service Absolut, Samsung’s repair subcontractor in Montreal. It was there for over a week now. Their communication is terrible – it just says ‘open’ or ‘close’ on Samsung’s tracking website, so I called Absolut themselves yesterday asking for the status/tracking number. They said they were going to ship it yesterday even though my repair ticket online said ‘close’ since last wednesday.
I find this really strange, especially since your phone seems to have done the same thing as mine right around the same time. I figure it was Rogers/Fido that messed up their network somehow. Two working Rogers sims didn’t work in it either. My sim card was working on my old blackberry still. My IMEI didn’t appear in any blocked IMEI lists I looked up.
I just got my phone back today 10 minutes ago and it works again. It says 'full software upgrade and reset' on the repair list I got back, although I didn't mod my phone in the first place. At least I had my backup blackberry. Still pisses me off – I spent hours trying to figure out what was wrong with it and I wiped all my apps when I did a reset, so I’ll have to load them all up again and set up my phone.
Just weird.

And Again...
Well, it seems it just happened again.
After a month and a week or two of working perfectly (same length of time as last time), my i727R now says 'No Service' again for some reason on FIDO network and won't connect to anything except through Wifi.
I didn't install any new software or change any settings when it happened.
It was working one minute, put it in my pocket and a couple minutes later it says 'No Service', even though I have always had service before in the area I am in right now.
Does anyone have a clue what can be causing this?
Network, Software (some kind of timer somewhere that would shut off connection), Malware?
This is driving me nuts - I don't want to have to send it back to Samsung again.
Last time Samsung said they reflashed the software when I sent it back.
I don't know why I would need to do that since it was working just fine and I wasn't messing around with any settings before it started saying 'No Service' - same thing happened last time.

[Q] Problem w/ Mobile Network or Sim Card

Hello guys,
I have my At&t version HTC One X for couple days. I notice there's the problem with network connection which happen 3 times already. I cannot connect to the internet even though I still see 2 or 3 bars of signal and 4g logo. My browser or any other apps won't connect to the internet. The problem's solved if I reboot this phone.
Also, I have seen couple times the notification "preparing sim card" even though I didn't turn off the phone, nor remove the sim card from the phone.
Do you guys think it's software problem or hardware problem?
Anybody has the same problem with me?
Should I get a replacement from the store?
Thanks..

First off, there are 2 threads like this in general...one from me.
Second, I called AT&T and HTC on the matter of "preparing sim card" along with a ! in a triangle and "changing restricted access" on the notification bar...they had no idea what was going on. They both told me to return it, it might be the sim reader going bad.
Just take it back to where you bought it and get another one. I did. So far so good. Good luck!

[Q] Nexus s i9290a mobile network unavailable

Hey everyone,
So here's my problem. I have acquired from a friend, a Nexus S since I grew bored of my blackberry. Its running ICS 4.1.1. I am trying to set the phone up to work with my old sim card, but when I try to make a call it says mobile network unavailable.
I've gone through the APN settings for Virgin Mobile, tried to search for networks and it always comes up blank.
I've reseated the sim card, had the battery out for half an hour, left the sim card in for a couple hours (various tips from searching on the net for this issue)
The sim card works in the blackberry still. It connects fine to my wifi network.
I've checked the IMEI numbers, baseband numbers etc. So far nothing seems to work. I'm going to see if the cell phone booth guys can help while at work but figured asking here was worth a shot too.
I haven't tried any rom flashing or whatnot, since I've never done this with any phone previous. And most of the issues i've found on here seem to be similar to what i found on the net so far.
Thanks for any help

[Q] LG 4X HD lost IMEI no network please help.

Hi, any help here would be greatly appreciated. My phone says no sim card and I have no network. Now that might not seem like a major problem but my phone has somehow lost its IMEI number.It has just gone! I have not changed the software it is just a standard phone. Any ideas how I get this IMEI back because without it my phone is useless? I have done all the usual factory resets but nothing works.

galaxy doing the same
bazza1410 said:
Hi, any help here would be greatly appreciated. My phone says no sim card and I have no network. Now that might not seem like a major problem but my phone has somehow lost its IMEI number.It has just gone! I have not changed the software it is just a standard phone. Any ideas how I get this IMEI back because without it my phone is useless? I have done all the usual factory resets but nothing works.
Click to expand...
Click to collapse
My wife's samsung galaxy s gt 5380i has suddenly decided not to let her text/call. service state says out of service, mobile network state says disconnected.Her sim works in my iphone, and she has 3 bars showing of her EE signal. I've checked everything I can think of, but no joy. I cleaned the sim contacts, but apart from resetting the phone I'm stymied. My t-mobile sim didn't work in the galaxy either. When trying to call an error message says no mobile network available. I bought the phone a couple of months ago on ebay, it's immaculate and worked flawlessly until this morning. Please help, wife is not impressed...