Q: Sim Card Failure No Sim with iPhone 4S Anyone Else?

I'm having the same issue too with a 64 gb sprint iphone 4s along with wifi and reception issues.  Running 5.0.1. I tried 2 restores now, (one with setting up as a new phone) removing and putting the sim back in.  I think I'm going to go to sprint now.  I seen that replacing the sim fixed the issue for a lot of people.

Same problem here in Mexico (iPhone 4S 16gb) with Telcel(US-ATT = GSM), i'm getting tired of all this crap, i can't use my phone normally, it's driving me crazy!!!!!!!!!!, i tried all workarounds in a lot fo differents forums and none of them worked...  i'm very disappointed on Apple........does iOS 5.1 fixed the problem?, can anyone confirm that?

Do anybody know when will be released the new 5.0.2.

I still not able to use my new Iphone 4S and i hope a solution will come soon.

I still do not understand why changing sim, knowing the fact that it worked on 5.0. I guess in this case it should not be an end user concern!!!

I also faced same issue on my unlocked iPhone 4S....

Me too. Unlocked iPhone 4s 16gb black. All of a sudden it appeared a message that said no sim card.

Rebooted the device and reset networks settings for several times. Finally the phone got signal from at&t but can not make a phone call or send a text message. Problem solved by restore the device to factory settings. I think this is a hard or software problem because i tried several other sim card but none of them works during that period.

This is matrix!

I got my phone exchanged. It came preloaded with 5.0.1 -> all seems to be working, for now...

but kinda strange: I am a little excited when I check and see that I can make phone calls, with my phone... ;-)

how to u restore to factory setting ??? i tried normal restore dint work for mee

This is for guys who r getting network but cannot make call whn u see network make a call

u will not be able to ur network will go to searching and then whn u get network back u will be able to call till 15 20 min this is for temporary use till 5.0.2 coumes out.....reply if any quaries ???

I'm on my 3rd iPhone because of this issue.  Apple will not admit that there's a problem an VZW acts likes it a new problem.  I have used the "tape" so I can keep the sim card inserted.  I'm afraid that I will loose it if I take it out.

Has anyone with this issue travel abroad where they need their sim card to work?  If so what's happened?

I have iphone 4s with latest 5.0.1 only for 6 weeks.  Just happened this morning with error: invalid SIM then no SIM.  

Recyled power worked for few minutes then back to same error.  I removed SIM and cleaned it and now it seems OK bur not too confident.  It happens again i think there's more to it than just reseting the SIM.. suspec may be hardware, firmware error etc...

I have my second iPhone 4S 16gb (replacing firstone with 5.0.1),  Model starts with MD2 and iOS 5.0.0, and a new SimCard... everything it's ok, but after 5 hours, the famous message appears... The message appears inmediately when i activate 3G, so, i'm deactivate and everything goes fine again, i beleave this is a mix problem, hard+soft, I don't dare to upgrade and I waiting for an official Apple response, It's a fantastic piece of technology!!! come on Apple!!! do something!!!!

ლ(ಠ益ಠ)ლ

I am getting sim failures every 2/3 hours on my iphone 4s. I didn't have any problems until I upgraded to 5.0.1, I have tried to restore to factory settings but I'm forced to install 5.0.1 when trying that.

My battery is also worse, the usage stats are all incorrect for example after charging before I go to bed, I will wake and the usage stats will say the phone has been in use for 5-6 hours, it's ridiculous. What is going on, do I need to return my phone or wait for 5.0.2??

Even the complete/ultimate restore and purely new setting of iphone 4s did not help me, still getting sim failure.

What i am actually testing now is: restoring all settings and set up a new iphone (to be sure it is pure). Then activating it with new apple id and cloud disable (only thing enabled is wi-fi and 3g). As I have a very unstable connection at home it does not usually take long before the sim failure arrives - after that iphone is unable to find ceullar after it is lost (right now it is able). Sooo i will leave it rest till next morning. If I see sim failure again... well dunno what might help, i would have to use another phone.