Sim Part - Samsung GT-E2121B Service Manual

Flow Chart of Troubleshooting

9-2. SIM Part

"Insert SIM" is displayed on the LCD
VSIM_3.0V at the pin#1
SIM200 = "H"?
Is there any signal pin
#2,3,4 of SIM201?
Check the SIM Card
Yes
Yes
END
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No
Check the SIM Power
No
Check UCP201
9-4