I upgraded my iphone and not recognizing my sim card???

when you upgrade to ios 5 its no longer jailbroken and therefore your sim isn't being recognize. as probably your iphone is locked to at&t or verizon while your sim is from a different company then the lock.

If the Iphone works, all you have to do is reinstall Itunes.

Actually, you can import contacts from SIM to iPhone with simple steps. Just follow below guide.

iPhone doesn't store contacts on the SIM card. If you want to transfer contacts between iPhones, you can use iCloud to backup or transfer content between devices. When it comes to import contacts from SIM card to iPhone, users will only need three simple steps.

1. Remove the SIM card from the old phone, and install it on your iPhone.
2. Your iPhone may need to reactivate. If so, connect to iTunes.
3. Tap Settings > Mail, Contacts, Calendars > Import SIM Contacts.
4. Wait for the import to complete.
5. If you swapped SIM cards in step 1, remove the SIM card and replace it with your iPhone SIM card.
6. Open Contacts and make sure that the contacts imported.

The contact information imported from a SIM card depends on how your previous phone stored information on the SIM card. For more help with importing contacts from a non-Apple phone, check the manufacturer's website, app store, or contact your carrier.After doing this, you will get the contacts in your iPhone. Transferring contacts from SIM card to iPhone is easy to be done when users have a suitable SIM card with iPhone. But if the SIM card cannot be recognized by iPhone, what should the users do to import contacts from SIM card to iPhone?


For more details, check: How to Transfer Contacts from SIM Card to iPhone

Take out the sim card clean it with a clean cloth and inserted it back, Still if it is not working Press the power button till you get the power to slide option and then try hope this will help you.

u pls jailbroke the iphone with redsn0w , then it will be

When you made the upgrade from 2.2 to 3.0, it relocked your phone to AT&T. You'll have to unlock your iPhone again to get it to work.

remove and re-insert the SIM card when the iphone is off. then, hold the home button while turning the phone on.

I recommend you restore your iPhone, if you don't know how, i'll be happy to walk you through it. After that, upgrade to the new firmware. After you have upgraded, unlock it with the newest PWNing software. That should fix your problwm.

try to upgrade or restore your software of iphone. i just suggest that upgrade may the best point to solve the problem

Im a wizz with the 1.0.2 Series, do you have msn messenger? I can send you all the files to fix it!

Shaun