Pine phone Parts from the Pine Store

[bcnaz]

I "Think" the external power/charger port is located at the bottom of the phone, so yes that would be the "daughter board" below the battery.
So to replace that 'jack' you replace that small daughter board. That is indeed connected via a 'ribbon cable'.
* If I remember that video correctly, the soldering occurred at the 'top' of the phone (?) meaning that was likely the camera(s)..?

(That is how I envision it, I could be mistaken) ?