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Level 3 Repair
8-11
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8-3-1-4. SIM Part
Phone can't access SIM card
Check the voltage
of
SIM1,SIM2(C333,
Yes
No
Yes
Check SIM_CLK
Signal(C356,
C357)?
Replace UCP200
No
Resolder C356, C357
Check the SIM Card is
damaged
Yes
Check SIM_DATA
Signal(C332,C33
4)?
No
Replace UCP200, SIM300(SIM301)