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

It is 1.5.04

First thing I'd try is a soft reset (hold down power button and home button til it turns off), then back on. Reset network settings, reset whole phone. Take SIM out, soft reset, put SIM in, turn on. If no luck then, get a new SIM card. If all of the above fails, its probably the reader within the phone. SIM cards can be so fun...

Im on my third iphone 4S. Im in mexico last one i didnt updated to 5.0.1 and the phone has been working ok for a month but facetime and imessage doesnt work lol

I have developer account, but it is not allowed to download beta 5.1. I know that I should be enrolled into program, standard or corporate to use beta sdk. But I do not want to pay just to try if beta 3 solve the problem.

I'm in the same situation. I bought my 4S in Belém, Pará, Brasil, and after 10 days, it started the SIM bug and the lost of signal. I tried 2 restores, one of the them with the SIM and a backup and the other without the SIM and with full restore. All the same! I also have a developer account but without paying the anual tax, you cannot download the beta. Well, let's wait the final release 5.1.

Hi,

You don't need to enroll your phone to the developer program, just Google it to find the download and do an update. I did and this seems to work :) I will keep you update.

Greetings

same thing happened to me this morning. After 2 apple techs they sent me to verizon. he did something on his end and told me to just take the sim card out.

works now. He said the next update shoudl fix it.

I had to restore the whole phone too.

Dear Andy,

Thanks for the post.

I emailed ceo@apple.com yesterday with no luck.

I would like to keep in touch outside the board.

Please mail me on alsammak@gmail.com

Regards,

Al Sammak

Bought a 4s a few weeks, No Sim just appeared today for the first time. AT&T store guy removed and re-inserted SIM and it's working again. How long will it work? :dunno

black 32GB

IOS: 9A405

model: MC923LL

modem: 1.0.13

Wow, what a mess, eh?

Well, I spoke too soon. Phone just went back into No Sim mode. Ain't this sweet.

Hi Sethms,

I can confirm you that 5.1 beta 3 fix my sim problem, before that i had the problem every 15 mins. Remember, you don't need pay for the developer program, download it from another site which is sharing the update.

Greetings,

Francisco

Everyone who have sim failure problem just update to new beta3 iOS 5.1. And your problem will be solved.

In order to update you don't need developers account. Just download iOS 5.1 beta3 http://www.multiupload.com/UN5F70GHG0

Then you NEED TO UPDATE(shift+update) via iTunes. Pay attention UPDATE not RESTORE. If you restore you cant then activate your phone.

FINALLY I GOT WORKING IPHONE 4S

Thanks Francisco for help. But I did a mistake with restore and not update. I did not copy my UDID, and now my iPhone is unable to activate. I tried to downgrade to 5.0.1 and make update to 5.1 beta, but could not manage it. Will try something at evening.

That worked for me as well. Thanks for the "Update" advise. Very important !

SHAME ON YOU APPLE !

I am one of the many who posted in this thread a week ago and for several days it seems that i have no solution. I brought my iPhone 4S back to globe store and the technical man did a full restore and was able to bring back the ios and firmware to what i have in my previous iphone 4. For two days after that, i still had invalid SIM and SIM failure and very erratic signal. UNtil, today, to my surprise without doing anything, the phone seems to be working fine... I had no invalid SIM this morning and hopefully for good. SIgnal is superb as well as 3G data... I am actually ready to try and unstall ios 5.1 beta 3 but i guess I just have to wait the final release.

I am really hoping that my phone working well right now is for good.

will update everybody....