v3688 network problem
 

when I turn it on network signal is present and after 20 sec or when i try to make a call it's gone,and then comes back,and then again lost signal,what is problem here,tell your solutions

Pls measure the battery side 's 26 MHZ crystal clock, and check the Magic I.C if it's working good you have to move the metal cover.

anybody else have some solutions

bert can you explain where are these two things that you are talking about above,and I have one question,on the battery side on the top of PCB are 3 transistors,I wan't to know somethinh about that in the midlle,what is it used for....THANKS