Flow Chart of Troubleshooting
9-4. Sim Part
Phone can't access SIM Card
T/SIM600 pin 11,14 = "H"?
After Power ON,
Check SIMCLK Signal on pin15
of T/SIM600 in a few second
After SIM card insert,
T/SIM600 pin 13 =
"H(SIM_RST)"?
Check the SIM Card
Yes
Yes
Yes
Yes
Yes
END
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No
Check the sim charge pump
No
No
9-8
Check the clock
Replace PBA