Sim; Sim Not Detected; Incorrect Sim Indicated - Sony Xperia tipo ST21i Troubleshooting Manual

Problem Areas

1.30 SIM

1.30.1 SIM not detected

Check the SIM card holder.
Check:
Inspect the SIM card holder.
Action:
1. If dirty or oxidized – clean the holder.
2. Replace PBA.

1.30.2 Incorrect SIM indicated

Check:
Check whether the phone is locked to a particular operator
and whether the correct operator SIM is being used.
Action:
1. Use a proper operator SIM or test SIM.
2. Replace PBA.
1266-1682 Rev 4
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Troubleshooting Guide (mech)
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