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Figure 13 No registering or call
SIM related faults
Insert SIM card fault
Troubleshooting flow
The hardware of the SIM interface from UEMC/Litti (D2901) to the SIM connector (X2700) can be tested without
a SIM card. When the power is switched on the phone first check for a 1.8V SIM card and then a 3V SIM card.
The phone will try this four times, where after it will display ”Insert SIM card”.
RH-99; RH-100; RH-105; RH-106
Baseband troubleshooting
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COMPANY CONFIDENTIAL
Issue 2
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