Lenovo A7000 Sim Card Problem Solution Ways
Lenovo A7000 Insert Sim IC Solution Jumper Problem Ways Sim Not Working Sim Not Valid
Here’s the full solution for Samsung N920C SIM card problem that it does not accept or detect any SIM card being inserted to it. This solution shows the full line paths or connection tracks of the Nokia SIM circuit, from th SIM pin connector through to the SIM filter IC and to the inner most part of the main chips solder ball bumps.
Reasons for Problems
It might be due to dust on SIM Jacket contacts.
It might be due to faulty capacitors. If any of them is faulty then it will affect your overall SIM card function.
Issue might also be due to SIM card IC.
Lenovo A7000 Insert Sim Card Hardware Procedure
Clean SIM jacket contacts and check.
Check all capacitors with the help of a multimeter, if any of them is faulty replace it.
Check all track ways from sim card connector with the help of a multimeter, if any of them is faulty make a jumper.
In troubleshooting insert sim card problem you may first check and trace the SIM card pin connector connection such as the SIM card supply voltage and ground pin. IF these line paths were both okay,
Lenovo A7000 Sim Problem Solution.Repair Simcard Problem.Sim Ic Jumper Sim Card Ways, Sim Not Working Repair Solution
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