1. Confirm that the device defect phenomenon has always existed <br>. 2. Query the log and find that the device touch fail <br>3. Disassemble the device found the MB side FPC no assemble well <br>4. Re-assemble FPC phenomenon disappeared.
1. Confirm that the device defect has been present<br>2. Query log found device touch<br>3.Disassemble the device found the MB side FPC no assemble well<br>4.Re-assemble FPC phenomenon disappears.
1. Confirm that device defect always exists<br>2. Query the log and find device touch fail<br>3.Disassemble the device found the MB side FPC no assemble well<br>4. Re assembly FPC phenomenon disappeared.<br>