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 I even got the antenna replaced and still doing the same thing when if i bang it sometimes the signal will come back
I have recently fought this battle with an iphone 6 and suggestions posted above about Baseband helped me repair this issue. Check your settings in General, About…and see if IMEI and Modem are there… Dial *#06# to see if your IMEI displays…If not or if one or both are missing you would need to reball baseband IC and run jumpers on Pads U1 and V1 . If the information is populates, remove the shield where baseband is located and check the Caps for shorts surrounding it…here was my No Service issue on iPhone 6 looking for help and discovered it was not baseband but related to the circuit(s)
It’s most likely a baseband chip issue, needs to be reballed from bad solder joint. Other than that nothing much else you can do.
You might have to replace the signal antenna
sounds like an antenna issue like those above have indicated. Have you tried to RESET NETWORK SETTINGS in the general menu? Put you phone in Airplane Mode and try this. Besides this the only approach left is to try and restore the iOS. You might also verify your SIM card is seated properly and the tray is flush with the frame. This would also cause your symptoms.
