Solution: How to Fix Xperia X10 Insert Sim Card Problem

If the Xperia X10 unable to detect, rd or if the phone does not recognize the SIM card. It could be the SIM card that is damaged or it could be a phone problem?
Here's the solution on how to fix the problem.... 

Try to insert a different SIM card on the phone and check if this works. If it does not work,  visually check the SIM card connector for possible damaged or cln it if