Cp repair

This is hardware failure of your phone. There are many parts of radil frequency section in a phone. You have to change affected part after carefull testing. Generally NO NETWORK if problem of defective antina switcher of the phone, but there are other parts are also may be responsible for that. If you are skilled in SMD repair then mail me here and I will give you step-by-step solution. Otherwise it is advisable to hand over the job to skill technician nearby you as it will cost you little but you will get working phone.