Phone Can Not Access Sim Card - FLY E135 Service Manual

E135 Service Manual
Light sensor trouble
open light sensor function
1.Measure GPIO43_LGT _PWR
whether is high level
2.Measure VDD whether is 2.8v
Measue LGT _SEN_VDD
measur LGT _SEN_OUT
Re-download software

Phone can not access SIM card

5.18
Reference circuit as follows：
YES
YES
whether is 2.8v
YES
T he glare shines U704,
whether is 2.8V
YES
and format
END
Wingplus Communication LTD.
NO
Re-welding or change U201
NO
Re-welding or change U703
NO
Re-welding or change U704
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