My mobile are swithed off when i attend the call.and after these problem one one more problem r create.my n95 was fully white screen..plz help me

Your first problem is phone off when attending a call
solution for this problem 1. change battery to original one 2. if not solved it has get hi current on RF IC so you have to change the RF IC second problem come from your first problem it is software problem because your phone not shutdown (so auto off) flash your phone to solve it