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Keypad issue
Start
Check if the Keypad
is damaged
YES
Not recognize SIM/TF card
Update latest software version,
Start
check if the issue is solved
No
Update latest software
version, check if the issue is
solved
YES
Replace Keypad
No
YES
OVER
No
Replace the Dome
sheet or replace the
YES
OVER
Check if SIM
No
Replace Main PWB
connector is
damaged
YES
Change
Sim1301/
SIm1302
No
Replace Main PWB
keypad
Over
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