Connector is like centronics with plate inbetween on phone side
1
Dual-SIM (is MTK-platform with MT6223 CPU) - (possible that may be identical to Haixing 688 - please double-check who knows it!) - Charger: only pins 1 & 11 wired / Mic-/Earphone: only pins 2 & 7 & 8 & 9 wired & pin 10 no pin on cable-connector