Chosen Solution

phone will not pick up network… keeps searching both apple and telstra say its a hardware problem but will not fix because of non genuin battery and screen

Baseband modem. This is a common fault in the 6/6plus if you have a hot air rework station you can reflow the modem bit this is short term solution. Proper solution is to reball the modem. This fault occurs because of the screw location to the case creating a pivot point