The upper layer and lower layer of the iPhone 12 series logic board is weld together, before repairing, you need to disassemble the 2 layer board,
then attach them together after repair is done. If the problem on the motherboard can not be solved, you need to repeat the disassembly and reassembly operation, which is easy to produce chip virtual welding, CPU tin damage, and other problems! Therefore, the iPhone 12 series motherboard test fixture perfectly solves the problems and offer professionals more efficient repair