iOS 7 Sim Error

the problem was resolved?

I am having the identical problem, even after restoring the iPhone 5 in recovery mode, reinstalling iOS 7, etc. I am seeing reports this morning that Apple is having problems with its activation servers: http://www.tuaw.com/2013/09/18/apple-issues-internal-alert-for-iphone-activation -server-problem/

I got activation error messages after the restore process, so perhaps this is the root cause of the problem. Hopefully we will see a post by someone who has resolved it.

I'm having the same problem with my Iphone 5. After upgrading to the iOS 7, I'm getting a SIM CARD FAILURE MESSAGE. When I turn it off and turn it on again it works properly for about half an hour but then I get the message again. I've already took the SIM CARD and put it back again and it did not solve the problem.Can anyone help? Should I go to apple store or sprint to get it fixed? Who's to blame, Apple or the carrier?

Same problem. The iphone 4 came off contract more than a year ago. It was unlocked by the carrier (AT&T) and has worked fine until today. I upgraded to i0S 7 now it does not recognise the SIM card. Nothing works.

Same - Iphone 4 updated this morning with IOS7, now persistant message 'No Sim" despite turning on and off, removing and replacing sim card when on and off, restting network and everything else...:(

For my phone other sim cards do not work. It made no difference to add another sim card.

Same problem. Updated to iOS7 yesterday, had no problems till tonight. Even after shutting down, SIM card is not recognized. This is pretty messed up. Will go to my mobile provider tomorrow and see if they can get me a working sim.

UPDATE: We took our Phone to Verizon. They popped in a new SIM and everything is fine now. It seems that the iOS upgrade is corrupting the firmware on some, but not all SIMs (my guess, not Verizon's explanation). Strange.

same problem. after updating to ios7. my phone says that i need to insert a valid sim. but my iphone is not factory unlocked.

Eventually got it working. Reset and restarted phone several times. Went to the phone company and they reset and got the sim card to work. I connected to my computer and restored the phone from back up. The sim card stopped working again. Went back to the store, reset and restarted several times. The sim card started working. Back to computer and completed a synch. It all started woring proerly. I guess temperamental is the word!

Update: I also went to my provider Omantel, they tried the sim in another phone and confirmed it was corrutped, I bought another one and now phone works fine. If I had known the SIM could be corrupted like that from an update, I would not have wasted 4 hours trying to trouble shoot everything else:(

Oh well, working now:)

I had the identical problem. Since I have got a brandnew Iphone 5, I immediately got it upgraded to IOS 7. Unfortunately, it kept silent and only showed "searching" right on the carrier's position. I have tried to turn on and off for several times but it still stayed the same. I probably bring it to Apple store tmr.😠

hey guys.. I'm having the same problem too. Only started after the ios7 upgrade. Happen about 5 times within the first day of using ios7 on my iphone 5. What I've notice is that it happen whenever my signal to my carrier very weak and will drop out, but when I'm in the city for work it's fine and never get get that "no sim installed" message. Putting the evidence together I reckon some smart *** programmer thought they would use the carrier connection signal as a means to determine if a SIM card is installed, perhaps they didn't think that sometimes ppl do loose connection to carrier. anyways see what happens..

I went to my mobile provider and they switched out the SIM without fuss, and everything has worked fine sine then. They just said it happens from time to time with updates, didn't seem too concerned about it. I didn't ask if they had seen more iPhones recently- should have done that I guess.

Anyway, I guess my advice is to try to get a new SIM if possible.