If I inset sim it give me message that there is know sim

dear sir i have a sony ericsson j20i phone this have not taker any sim please give me the hadware solution of this proublam

micromax x1i+ insert sim probalem plece help me sir

check the battery.. and dont forget refer the manual for the proper insertion of simcard..
if it not solves ..try to insert any other sim card..and if this is also not solves your problem.. give to your service centre..

IT WOULD BE THE SAME CODE THAT WAS ON THE PHONE IT CAME OUT OF. IF YOU DO NOT KNOW THAT YOUR PHONE COMPANY CAN HAVE YOU INSERT A OVERRIDE CODE INTO YOUR PHONE BUT ONLY THEY CAN GIVE THAT TO YOU.

Please use compatible sim in the mobile set > if sim is compatible the try to reset the mobile to factory restore. Then i am sure it will work > search factory restore code in google.com

maybe the sim locker is not fitted

inset sim card problem

you will need to reboot it. actually master reboot. warning, doing so will erase all files that are not part of the phone originally so all texts, pics and what not will be lost if you do so. here is a link to show you how http://forums.wireless.att.com/cng/board/message?board.id=LG&message.id=32757 hopefully this helps

Hi, nothing to worry, With Airtel sim inserted do manual search for network n ur phone will give u a list of all available networks select one by one network everytime n u'll get the right one now save it. Restart the phone. Rate the solution

check the sim card holder give a service