Here's another Nokia 6303 classic solution for INSERT SIM CARD error problem. The solution picture below shows the connection line paths of the SIM card pin connector which tells us where and what components on the PCB board needs to check, calibrate or replace.
Just follow some hints below on how to fix if the phone unable to recognize or detect any SIM card inserted to it.
Hints to fix Nokia 6303c insert sim card problem :
1. Make sure that the SIM card you are using is 100% working.
2. Clean the SIM card slot pin connectors.
3. Check and trace the SIM card supply voltage (VSIM). When the sim card inserted, you can check around 1.3V to 2.8V. The voltage reading varies according to the type of the SIM card inserted.
4. Check/replace the VSIM filter coil.
5. Trace the SIM Reset pin and Ground pin connections.
6. If the above procedures won't work and or the VSIM voltage is missing, The possible faulty is the AVILMA IC. Try to re-heat or re-hot the AVILMA power IC, then rework or replace if necessary.
Just follow some hints below on how to fix if the phone unable to recognize or detect any SIM card inserted to it.
Nokia 6303c SIM Card Connection Tracks
Hints to fix Nokia 6303c insert sim card problem :
1. Make sure that the SIM card you are using is 100% working.
2. Clean the SIM card slot pin connectors.
3. Check and trace the SIM card supply voltage (VSIM). When the sim card inserted, you can check around 1.3V to 2.8V. The voltage reading varies according to the type of the SIM card inserted.
4. Check/replace the VSIM filter coil.
5. Trace the SIM Reset pin and Ground pin connections.
6. If the above procedures won't work and or the VSIM voltage is missing, The possible faulty is the AVILMA IC. Try to re-heat or re-hot the AVILMA power IC, then rework or replace if necessary.
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