Glaxy Note doesnt detect any sim card.

[netwiz7]

Dear All,

I just switched from iphone to galaxy note. Used the phone for 2 weeks now and suddenly my phone doenst detect any sim card.

1. i tried replacing sim card
2. i master reset my phone
3. all the above done more than 10 times still doesnt detedt my sim. Can anyone please help.

Mode No: GT-N7000

Android Version: 2.3.6

Baseband version: Unknown

Kernel Version: 2.6.35.7-N7000DXLA1-CL886914 dpi@DELL170#2

Buld number: GINGERBREAd DXLA1

AM I HAVING THIS PROBLEM DUE TO UNKNOWN BASEBAND PROBLEM? if yes please advise me how to solve this prob.:'(