3. Sim Part
Phone can't access SIM card
Check the pin 1 of CN100.
connector's (CN100)
connector's to SIM card
Check the circuit around CN100 input
Check the circuit around U601 output
and voltage supply circuitry
SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams
NO
Voltage = 3V?
YES
Check the SIM
NO
YES
NO
circuitry
YES
NO
YES
END
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Check the circuit related to
resolder or change CN100
Check the related circuit of
Check the related circuit of
4-3
U100
CN100
U601 and U100