Chosen Solution
My i phone 6 is saying no service and also searching for signal, it also randomly comes back, also when i bang it a little while resetting it. Im to afraid to do anymore of that and i tried resetting network, taking out sim, hard reboot, and Im pretty much at a lost.
When the signal disappears, go to Settings>General>About and see if you have a modem firmware or imei noted in the list. If the values are blank then the broadcom chip is at fault, you would need to have this chip reballed.
