My iphone didnt recognize my simcard - Apple iPhone Smartphone

It sounds like the SIM is corrupted. You may have to format it and start over.

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

I had the same problem with my jeep. Take it to the dealer. They didnt charge me.

On the upper part of your iPHONE there is a small hole which is to be punch in to eject simcard tray of your unit. See picture below for reference.
SIM Card Tray and Eject Needle Pin for Apple iPhone 3G 3GS
regards,

If you bought the iPhone used, it could be already locked to a carrier. If the iPhone wasnt previously purchased at full price (or jailbroken) then it will be locked to a specific carrier like Rogers or AT&T. If thats the case, you will have to contact that carrier and ask if they will unlock it, otherwise jailbreaking the iPhone can unlock it aswell, you can find guides through google on how to do it, Apple doesn't support it.

If you did buy the phone new, then try plugging into iTunes (make sure iTunes is fully updated, i think 10.3 is then newest). If it recognizes it and doesn't activate the SIM card, there will be an option to restore the iPhone (Erase and reinstall the operating system. If it doesn't recognize it at all through iTunes, follow this article to force it into Recorvery mode, which can let you restore it. http://support.apple.com/kb/ht1808

It not recognize Sim Card means ,it locked to Network,Get the remote Unlock service at here
http://www.prounlocking.com/supported-phones/rs8wp7/ and Unlock it from Network Lock.

my phone was has problems with itunes asking me for the oreginal sim but how am from africa where can I get this sim from here, pls help!!!

me too

Your iPhone is probably still locked. You first need to unlock it. To do so, go to google.ca and type in ZiPhone. Download the software needed and follow the tutorial that comes with it. You should be able to unlock it and use any simcard you like.

If your phone is infact unlocked, and still displays that message, go into Installer in your phone, and install iWorld. Then select the country that the simcard is from and your problem should disappear.

try removing the simcard from the iphone by inserting the end of a paperclip into the small hole at the top of the i-phone, this will push out the simcard. Then clean the simcard and re-insert it into the phone, the issue should now be resolved. if it persists then it could be because you have a faulty simcard in which case take your i-phone to your nearest apple/o2 store and they should give you a replacement.