LG Optimus 3D P920 Insert Sim IC Solution Ways

in case of insert sim problem in LG Optimus 3D P920 it will show insert sim, sim not valid, and may not show signal.to solve LG Optimus 3D P920 Insert Sim IC Solution Jumper Problem Ways we have to do a few simple steps as given in this post.in first step replace you sim and try it.scratch sim points in mobile slightly then try.