We don’t need a map to guess that the battery connector hides behind this motherboard cover. (But for less experienced fixers, a map would sure be nice.)

After removing eleven standard Phillips screws, the motherboard cover—with an NFC antenna and flash attached to it—comes off.

Standard screw types definitely make this easier, and they're all the same size and length, which greatly reduces the potential for reassembly error.

This is one advantage that Android phones routinely flex over their Apple counterparts, which use a sometimes bewildering mix of proprietary and exotic screws in every size and length you can shake your fist at.