Remove the sim card tray and pry off the back cover which aint easy. 2 small screw drivers and then pry around. ***If it wont charge try this first.*** On a Q-tip dipped in alcohol hold the phone upright and swab out the charge port. After cleaning allow it to dry. Thoroughly dry ! After it is dry hold it upright & brush it out with a soft brill tooth brush. Take your time, don’t compromise. Holding it upright allows all the debris to fall out. Charge it, if Lightning shows charging on screen Ok if not consider a new phone.