Blu Studio J1 - Device Malfunction Troubleshooting

9.2 Mobile fault analysis
Any question
Start
Check fault
is OK or Bad?
YES
OVER
No
Upgrade to
latest software
Or Restore
factory setting
No
Check
assembly
disassemble is
OK or Bad
YES
OVER
Check the
corresponding
fault circuit is
ok or bad
Seek help
No
Function test
Replace Main PCBA