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Tecno S3 All Repair Solutions
Tecno S3 SIM Sit Repair Solution
The tecno s3 has dua SIM slot. The connections can be found above. Only make this connection jumper if a led of the SIM sit pulls of the PCB. In this connection, one has to be very careful as the alternative points are very close to each other.
Tecno S3 USB / Charging Port Repair Solution
The USB port for tecno S# is similar to that of tecno M3. The alternative connection is close to the main terminals on the PCB. However, it may not be easy to connect as the components they link to are very small. Also, there are no GND, VBUS, DP and DP notations on the PCB. If you can follow the connections here and make a jumper, you can have your tecno s3 USB port fixed.
Tecno S3 Power Key Solution
See the picture above to locate the path of the power key for tecno s3.