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G2X won't recognize SIM card

Anyone else experience issues with swapping their SIM from their old phone into the G2X? I have reseated mine from my N1 into the phone 3 times, and each time I boot it says I have no SIM card. Pulling my hair out!

I went from an N1 to the g2x and i had the same problem so here is the deal...
the g2x is a 4g phone and it required a new sim card version so i had to trade in the sim card that i have had since my i got my razr in 2005...
so disclaimer to anyone who buys the phone outright, you have to have an updated sim card... just go into tmobile and they will give you one...

mines wont check for sim card at all it keep saying no service even without a sim card it usually say no sim but it just say no service can someone help plz plz plz

Fyi make sure it is a corporate store. Otherwise it could cost ya $20. Customer care might even be able to mail you one...not sure. If your near Chicago I would just give you one of my extras.
Sent from my LG-P999 using XDA App

I reused the sim from my N1 and have had no issues but it was probably a newer version sim since I just got it beginning of last year.

If you have an old T-Mobile phone lying around, try inserting your SIM into that, and using it, then re-insert it into your G2X.

Alright I opened it up and it looked like the antenna cable was a bit frayed near the tip, I attached a few pics. It was connected though so not sure :/
http://imgur.com/i2oH9,5LnGx,n97wZ ( three images)

I have the same issue.
Mint condition G2X does not detect my sim card reads "error while trying to connect to network"
I am running CM 7.2 I have wiped everything and reflashed still no luck.

Add one more to the pile...
I also recently began having this problem, but my device previously worked fine.
I have tried Restoring to Factory V21Y with Mar 11 Baseband
Flasing a GB Based ROM & Stock Kernel
Flashing CM9
Flashing CM10
Entering *#*#INFO#*#* Phone Info and modifying frequency band (No Go).
At one point I was able to read the Phone # from the SIM card, but couldn't get a lock on Netowkr. I can visually detect T-Mobile and ATT in Mobile Networks.
I have tried this with 4G Enabled SIM Cards and older T-Mobile SIM Cards.
I have tried Simple Mobile, Straight Talk, & ATT SIM Cards.
I have tried using None APN's, the TMo/Simple Default APN's, and Modified APN's for Straight Talk & Family Talk.
No avail.
Any ideas?

I had the same problem. A new SIM card fixed it.

RE:
Core Memory said:
I had the same problem. A new SIM card fixed it.
Click to expand...
Click to collapse
I gave my friend my old G2x because she was switching from AT&T to TMobile. She went to the TMobile store and got a new SIM card and her old AT&T number transferred to it. It works on her old iPhone but when I insert the SIM card on the LG G2x , it keeps saying 'no SIM card inserted'....do i need to flash a certain baseband on it and/or setup a custom APN for it? I am on the stock ROM thats rooted...
Any help is much appreciateed

Sorry for not replying until now but I rarely visit here anymore. My G2X had a bad Sim card which a new Sim fixed. I just had to wait until the network could authorize with it.

Hot sim card, and now no sim.

I have had my Infuse for about 2 weeks now. From the day I got it, I noticed it would completely lock up and start vibrating. Last week i noticed the sim card was getting hot. This morning I was using it with no problems. I set it on the table, and when I picked it up to use it, the phone was showing a "No Sim" message. I have removed the sim and rebooted several times, but it still says "No Sim." Is my phone pretty much shot?

ReganH22 said:
I have had my Infuse for about 2 weeks now. From the day I got it, I noticed it would completely lock up and start vibrating. Last week i noticed the sim card was getting hot. This morning I was using it with no problems. I set it on the table, and when I picked it up to use it, the phone was showing a "No Sim" message. I have removed the sim and rebooted several times, but it still says "No Sim." Is my phone pretty much shot?
Click to expand...
Click to collapse
Wow, never heard of that before. Even if there is a fix for your issues id bring it back, since its only 2 weeks old the store should exchange right in the store. If you wait past 30 days than you may have to send it out for warrenty replacement.
Sent from my SAMSUNG-SGH-I997R using XDA Premium App

Thanks Nash. The only problem is this phone was a replacement phone that my cousin got when he had problems with his first Infuse. They day this one arrived I traded my iPhone 4 for this Infuse. I'm not sure if AT&T will even do anything at this point. Looks like I might have to send it back to Samsung.

I forgot to mention that I am using the SIM card from my iPhone 4. It is smaller then the actual SIM card slot on the phone. I just took the card out and re-centered it, and now it works. I'm thinking I need to go in and upgrade my SIM card. I'll still take it in for the other problems, but for now at least I can make calls.

The first thing i would suggest would be the sim card. I have also had good luck with att's warranty center on the phone. I bought a samsung captivate from craigs list. The service rep said my account said I got the phone in like November (mind you I don't call att and change my imei unless with an upgrade). Told them I had the random shutdown problem and they replaced it no questions asked.

ReganH22 said:
I forgot to mention that I am using the SIM card from my iPhone 4. It is smaller then the actual SIM card slot on the phone. I just took the card out and re-centered it, and now it works. I'm thinking I need to go in and upgrade my SIM card. I'll still take it in for the other problems, but for now at least I can make calls.
Click to expand...
Click to collapse
That's the problem that sim. Needs replaced fast buddy take your phone there and get new one asap
Sent from my SAMSUNG-SGH-I997R using XDA Premium App

Yes you should replace your ip4 sim for one that fits, only thing is- I'm sure att will change your number from iphone to Infuse, with that pending, I'm not sure if samsung will warrenty that phone since you weren't origianlly contracted to that phone, I could be wrong. I do know that att can downgrade your data package by switching phones. I bought my gf an inspire from craigslist, I was told that att was releaseing an update for inspires to have "unknown sourses" but you had to call and request it. I called and when they asked for my account info and phone number they noticed that phone number went to a samsung captivate. I said that phone broke so I picked up a replacement. They said they would have to change account from captivate to Inspire, I said go a head. Than they told me said I'm having work done to a non contracted phone, I will loose my unlimited data. I said touch my data and I'm gone to verizon...cancel my request. I later called back and explained, they left me alone and updated my phone. Kinda messed up what att can or try to do to your account.
Sent from my SAMSUNG-SGH-I997R using XDA Premium App

Thanks for the info guys. I just landed in San Diego and walked over to the At&t store near the hotel. They replaced the similar card with no questions asked for free. Nothing changed on my account. The sales Rep said his Infuse has the same freeze with the vibrating problem as well.

You need to go make a full size similar card, or get one from at&t
sent from my big bad infuse 4g

I HAD THE SAME PROBLEM!!!!!!! its around the sim card right hand side gets really hot too

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.

No sim card error?? Any solutions??

This is not my forum, I don't have one yet, I have the bell, samsung galaxy s2 hd lte. It's a brand new device 9 days old, it started yesterday saying "no sim card inserted " I had you pull the battery and sim card then reboot, it was fine again for 12 hours now it's happened twice?? Anyone else experienced this??
Our phones are similar, bell said get a new sim, which I will tomorrow, however after a Google search this seems to be a popular error with the s2.
Thanks
Sent from my SGH-I757M using xda premium

Are you on the stock ROM? Are you rooted? Did you flash anything to the phone or change the ROM, Kernel, or modem? If you haven't done any of this, I would try the new SIM card. If that doesn't work, exchange the phone. If you have done something, try going back to stock and see if it resolves the issue. Alot of times it comes down to the modem / radio being mismatched to a ROM or Kernel.

im having the same problem, the way to fix it is odin flash the firmware from sammobile, buttt i cant connect my phone via usb anymore thus im stuck with this problem ;(

2 Possible Solutions(Easy Fix)
1, wait out the data outage in your area. We are on ATT and having the same exact issue and when I called 611(Customer Service) the automated answering system told me that they are currently experiencing data outages in my area. could be due to a tower/service upgrade being that 4G is coming out in more areas now.
2, call 611 and set up your phone model with the customer service rep at the technical support extension.
I would put a 3rd option... but I haven't tried flashing a new rom yet, I just got the Skyrocket as a free refurb from Insurance and I am currently on an unrooted stock GB ROM.

yes flashing to original rogers tar using odin did fix it.. but if i try other roms its broken again, so for now it looks like ill have to stay with the original firmware

If you flash the ucle2 modem in SeanZscreams post it will most likely fix the issue on each Rom you flash as long as you flash the modem after.
Sent from my i727 DÅÅTH machine

To check to see if its your SIM card, use a USB Adapter or microSD -> SD adapter. Back up all your files then reformat it using: https://www.sdcard.org/downloads/formatter_3/ and then put back all your stuff and try again.

try this or other plp that have this problem try this pliz an coment
markdexter said:
This is not my forum, I don't have one yet, I have the bell, samsung galaxy s2 hd lte. It's a brand new device 9 days old, it started yesterday saying "no sim card inserted " I had you pull the battery and sim card then reboot, it was fine again for 12 hours now it's happened twice?? Anyone else experienced this??
Our phones are similar, bell said get a new sim, which I will tomorrow, however after a Google search this seems to be a popular error with the s2.
Thanks
Sent from my SGH-I757M using xda premium
Click to expand...
Click to collapse
posible solution
http://forum.xda-developers.com/showthread.php?t=2099609

deleted

Deleted

Wtf? This is the s2, i727 forum. They is no nfc chip in the sim.
Sent from my SGH-I727 using xda app-developers app

windstrings said:
The error message that said I needed to insert a valid sim card happened again today while traveling home.
The good news is I think I figured it out!
The Galaxy S4 requires a "nfc" enabled sim card!
You can't tell by looking at the tiny sim but the larger card the sim comes in has a notation of "nfc" if it's the right card.
I hung out in the Verizon store after inserting it and the drove home "an hour drive" and absolutely no errors!
And I maintained a 4g signal throughout my whole trip which was through some back country where signal is usually marginal.
This is a pretty serious problem for Verizon.
Why?
1. Because if I would have ran around in safe mode it still would have errored.
2. If I would have reformatted to factory settings... The same... All for nothing and days of configuration lost.
3. If I got another new phone, again the same.... All because I would be using my same sim card.!
I'm sure many replace the whole phone "and" sim together and when it works it's assumed the problem was the phone or software.
What a terrible headache for the customer, tech support, and verizon customer service just because people don't know the proper sim card needed for the S4!
Alan.. Sent with Galaxy S4
Click to expand...
Click to collapse
You're in the wrong forum. Wrong phone and wrong provider.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 4 Beta

xcrazydx said:
You're in the wrong forum. Wrong phone and wrong provider.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Oops, you're right, sorry!
I deleted my post
Alan.. Sent with Galaxy S4

I have the 727 galaxy ii and started having the same no sim inserted message. Running stock, never rooted or anything. Turns out my solution was to reflow the solder around the sim card and that got it going again.

s3 new activation issue. Shows wrong phone number...

So I bought a used s3 on eBay. I received the phone with someone else's sim card in it which was already activated and worked to make calls and surf web. So I went to Verizon and got a new sim card and had them activate the phone under my account. However activation kept failing and after many attempts and factory resets and getting a second new sim card the phone finally activated. However 4g doesn't work and I get crappy in and out data service. I checked the about phone status and it shows someone else's phone number but has correct imei number. My old 3g phone was an HTC incredible and it became deactivated and kicked off the network so I assume the phone activated under my account... what is going on? How do I fix this?

Weird. Are you rooted? You could try flashing back to the original "VRLF2" build of Ice Cream Sandwich and then entering the re-provision code into the dialer.

It looks like that did the trick. I flashed back to the original ICS stock rom and popped my sim out, did a factory reset, put the sim back in, then booted it up and entered the reprovision code, when it came back up it finally had the correct phone number and it looks like 4g is now working.

https://www.google.co.in/url?sa=t&r...aXysP_U7ckhKGOJ1A&sig2=yHqmc-7iVzC_Usop7-sgvQ

nrdnandan said:
https://www.google.co.in/url?sa=t&r...aXysP_U7ckhKGOJ1A&sig2=yHqmc-7iVzC_Usop7-sgvQ
Click to expand...
Click to collapse
This is a 4 year old thread, kinda pointless for you to answer.
Sent from my SCH-I535 using Tapatalk