WARNING : Do not try the following if you are not a mobile device technician as you may damage you device in the process. To learn to repair mobile devices, please follow our online course here.
Keypad connection way.
Save the image for tecno tt612 keypad way and create the right jumper for a faulty key. 100% working.
SIM SIT CONNECTION WAY
Here is the connection way for th two sim sit for tecno t612. All jumpers are accurately read and confirmed working.
SD CARD SIT.
Complete 8 terminal jumper connection for the sd card slot in tecno t612. This connection is reliable.
LED CONNECTION WAY
In the image, I provide the positive (+) and negative (-) led terminal to only one led. If you can get this bulb to light up, others will light up too. Connect the positive terminal to the VBAT of the tecno t612 to reestablish its connection.
SPEAKER CONNECTION JUMPER.
Find the alternative tecno t612 speaker connection in the above image.
HOW TO DISASSEMBLE TECNO T612.
It has only 4 screws, uncscrew them and follow the instruction in the image below to remove back cover.