Q: Invalid SIM Card on iPhone 4S (5.0.1)

we all had this issue. once iOS5.1 was released in itunes most of us updated and got the problem solved.

Pl update with iOS5.1 through iTunes and the problem will be solved for ever.

sathyam

hey am from the bahamas and i want to buy an iphone 4s.will apple cut my sim into a microsim card so that i can walk out the apple store using my new phone???

Yes you can. but either you get a micro sim from the carrier or you should have the sim cut into microsim size using the Micro sim cutter. it is available in ebay.

also pl update the iOS to 5.1 otherwise you might get this error."invalid Sim"

Yeha, I tried everything , and until I upgraded to IOS 5.1 the invalid sim and silly messages of no service have all dispaeread.

I am not saying thank you APPLE. because this shouldnt have happened to a new iPhone 4S 64 GB . one of the most expensive phones out there.

My 4s started showing those pesky "Invalid Sim" messages about 3 weeks ago, first everytime I charged it, then every 4-5 hours. I hard rebooted it, updated network settings, went to official carrier to get a new SIM. Nothing worked, so I had to take the plunge and performed a clean reinstall of the software ( 5.1 ) Set it up as NEW phone and now it worked like a charm ! the Phone is faster on 3g and  battery lasts  a little longer..It´s been 3 days already and the clean reinstall using 5.1 seems to do the trick

I almost feel silly posting this after all of the stuff that I've seen people trying. It's very frustrating and I went through it too. I had to get a new sim and then it happen again and then I tried the same things a lot of you tried posted here and on you tube and had no luck.

I did finally get it working and I haven't had any problems for a while now. For some reason I always felt it was related to my voicemail. For me it would always receive and send calls until I activated my voicemail and then I would get the invalid sim and no sim messages all the time. After many restarts and restores I tried this. I called and reset my voicemail and had them text me a new voicemail pass code. It worked. No problems since. I know this isn't going to work for everyone but I feel after watching these posts for weeks and trying the many things that you've tried that I needed to post this. Good luck

I have an iPhone 4s 32G with AT&T and its updated to 5.0.1.

I have tried everything under the sun.  Soft restarts (several times a day - bordering on insanity), full backup & restore from backups, restore as new, SIM swaps, EVERYTHING!!!  And I'm already on the most up-to-date version 5.1.  I'm at my wits end now.  This is absolutely ridiculous!!  It shouldn't even be happening!!  My phone is only 4 months old.  Apple needs to sort themselves out.  You can't keep doing this to your customers.

If anyone has any other ideas about what to do - I would greatly appreciate some advice.

I'm in the UK and on Orange.  I spoke to Orange and they said this is a well known issue to Apple and that their advice is to do a full restore as new which is meant to solve the problem for about 90% of the people who have it.  Well, it would appear I'm in the 10% for whom this doesn't work.  Any other suggestions???

You've only had it 4 months. This is crazy. These things are expensive. They should give you a new phone. What is the warranty. Did you use a credit card. Some companies will will offer a protection plan if you use their card for the purchase and help you to resolve this. You shouldn't have to go through all this if the phone doesnt work. Go back and demand help. Even if they were to give you a refurbish at least it would work. Go in and demand to speak to a manager at the apple store you got it at and get them to do something. Four months is way with reason for apple to give some kind of replacement. Go make some noise. Tell them you're not leaving until you get a phone that works. Four months and all these problems. That's bull$h!t.    Good luck.

okay only had my phone 4s 6 days and on the third day no signal or invalid sim can t make calls ,on my way to the shop know ,is there a fix for this?

There are at least 30 fixes from what is written here and you will drive yourself crazy trying them all. Don't put up with this get a new phone. This can take numerous try's and there are no guarantees they'll work. Go back and get a new phone. You have a right in the USA to even ask for a full refund if the product sold is defective. Use this to your advantage. I was lucky it only took me three weeks to fix mine. Some people have been going through this for months.

Good Luck.

HURRAH!!!  SUCCESS!!!  I got a new SIM card today - which although is a micro SIM like the one I used to have, it looks different.  They must have changed the micro SIMs.  Fingers crossed all is well.  So far - no errors at all.  No INVALID SIM flashing across my screen.  It's early days still but hopefully this did the trick.  The key will be if I manage to wake up and not have that dreaded message on my phone in the morning.

Thanks to everyone for your suggestions and help.  I'll keep you posted if anything goes wrong!! 

:-)

yes got a new sim alls well so far.

mine is iOS5.1 already but still got the invalid sim when 3g is enabled.

I've had my iphone for a week.  I had to take my SIM card out to get numbers off it.  When I put it back in the phone showed an 'INVALID SIM' message.  Aaaagh. Anyway :

I got this off another blog & it works!!  So simple - even I could manage it and I'm a technophobe.

1.  Choose the Settings app.

2.  Turn ON Airplane Mode.

3.   Reboot :     Press the big button on the front and AT THE SAME TIME press the top right-hand button (the sleep      one)  until the screen goes black and the Apple logo appears.

4.  Turn OFF airplane mode.

The SIM should be working !!!!

does not always work,i would advise getting a replacement sim card from your network provider.