iPhone 6 Bent housing no signal/service

iPhone 6 housing bent and motherboard bent towards the bottom of the phone and motherboard, everything works except that it will not get any signal/ cell service. It works on wifi, but on the top where it usually says the carrier it keeps saying searching, even after I pull the SIM card out it keeps saying searching. No bents anywhere near the SIM card reader. Tried a different sim tray, network reset, opened the phone and checked all the connectors and components. I haven't done a restore on the phone. I believe it mind be hardware related because it happened when the phone got badly bent. Any suggestions on things to try or how I can fix the problem. Thank you