Sim Detect Trouble Shooting - LG E475F Service Manual

3.17 SIM detect Trouble Shooting

1) SIM 1 trouble shooting
Check "Triple SIM Settings"
SIM Card is inserted correctly?
TP 3 is 1.8V or 3.0V and active?
LGE Internal Use Only
START
SIM1 is checked ?
Yes
Yes
TP 1 is 1.8V or 3V?
Yes
TP 2 is 1.8V or 3V?
Yes
Change the Main B/D
END
No
Check the SIM slot 1.
No
insert SIM Card correctly
No
Change the Main B/D
No
Change the Main B/D
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3. TROUBLE SHOOTING
Only for training and service purposes