Network after pcb twist
 

i have more than 3 nokia cdma phone with network problem. one is 6235 with full network signal but can't make and receive calls. When i do twist pcb phone work fine. second is also 6235 with surching network, when i twist pcb network will come.other is 3125 with surching network when i twist pcb network will come.

Please help me, any body have solution of it.

hiren