If ever encountered a nokia 6700 that always display insert SIM card on the display even trying inserting a good and working SIM card but still won't accept any SIM card, this solution may possibly fix the problem.
a) Ensure that the SIM card socket, slot or holder pins are cleaned and free from dust and oxidation.
b) Trace and check the VSIM voltage, it reads about 1.8 to 2.8 volts on components showed on the solution above.
c) IF the SIM voltage is okay, you may need to remove and rework the GAZOO chip for further trouble shooting.
Warning: handling the GAZOO chip may need extra expertise or you may end up a dead phone. Don't touch it if no adequate knowledge about this chip.
Nokia 6700 classic insert SIM card problem solution
Repair hints:a) Ensure that the SIM card socket, slot or holder pins are cleaned and free from dust and oxidation.
b) Trace and check the VSIM voltage, it reads about 1.8 to 2.8 volts on components showed on the solution above.
c) IF the SIM voltage is okay, you may need to remove and rework the GAZOO chip for further trouble shooting.
Warning: handling the GAZOO chip may need extra expertise or you may end up a dead phone. Don't touch it if no adequate knowledge about this chip.
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