Chosen Solution

I have Iphone 4s and the problem is if i insert the Sim, It still on Searching Network and my Iphone starts to turned off, i tried to reopen it again but it shows that it is Low battery? I just solved this problem by putting my phone in Flightmode! But i need an answer to use my Sim in my Iphone 4s without that problem. Help me Please!

Well unfortunantley you need an IC repair which costs 50$ min., its not worth it for an iphone 4s, sorry. Its time for a new phone.

sell it for parts and buy a 5s from walmart..$49.99