Areas highlighted in red show three solder joints to the right of the battery, along with four smaller solder joints located to the left of the battery.

These joints secure the power/volume flex cable (leftmost joint) and the battery flex cable (rightmost joint) to the logic board.

In the next few steps you will desolder the battery and power/volume flex cables from the logic board.

These joints may be coated in a clear silicone/glue, which must be removed before desoldering.