I have purchase nexus 7 from us with sim card slot. I have read many reviews which says that we can not use nexus 7 to call from sim without the use of internet. I just want to know 1. Is it possible to call from nexus 7 from sim as we usually do from normal phone. 2. Is there any application available which an make nexus 7 a normal phone. i.e call without accessing internet either wifi or 3g.