Sim Problems - Sony Ericsson G900 Troubleshooting Manual

12 SIM Problems

Problem Area
Items to Inspect
SIM undetected Inspect SIM holder
Inspect BTB flex + connectors
If the issue has not been resolved
Unit indicates the Check whether the phone is locked
incorrect SIM is to a particular carrier and whether
inserted the correct carrier's SIM is being
used
If the issue has not been resolved
1210-5425 Rev1
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Company Internal Sony Ericsson Mobile Communications AB
Repair Action
•
If dirty or oxidized – Clean
•
If damaged – replace the PCB Sub
Asm
•
Escalate to an electrical repair level
•
Use correct carrier SIM or test SIM
•
Escalate to an electrical repair level
Trouble Shooting Guide, Mechanical
Inspection Reference
29(33)