Motorola Droid Razr M Sim Invalid Or No Sim Card

I Have A Motorola DroId Razr M xt907 Which Have A Problem With The Sim Card
When I Insert My Father Sim Its Working Fine
But When I Insert My Sim Card(Which Is Same Network) It Says Invalid Sim Card
I Have Tried My Second Sim Card It Says No Sim Card
Any Solution For This Problem
And Sorry For My Bad English
I need Help

Download from this link