FIXONICBefore you begin
The logic board, also known as the motherboard, contains the CPU and most of the integrated circuit chips that control the operation of the phone. iPhone X logic boards are notoriously difficult to repair, as they consist of two boards stacked on top of one another and soldered together to form a single unit. Repairing any component sandwiched between the two boards requires them to be disassembled, an additional and difficult step in board repair that is already hard enough and requires microsoldering expertise. This guide will show you how to replace the logic board. However, in order to keep the Face ID function working, the Earphone / Proximity Sensor assembly and the front camera assembly, both of which must be paired to the logic board, must also be replaced. If the loss of Face ID is acceptable, then you can use this guide to to replace the logic board by itself.
