One of All Gsm Solution

This solution may possibly help fix and repair a damaged Nokia 7230 that result to Insert Sim card problem issues. If the mobile handset device does not accept any kind of sim card and only shows insert sim card in the LCD Lcd display, you may refer to this solution below to trace and check certain components that might get damaged and result to insert sim card problem.
The solution above shows the connection of the sim card pin connector and its signal line paths through to the GAZOO IC.
You may need to ensure that SIM card pin connector is perfectly clean and free from any oxidation build up.
The SIM card supply voltage or VSIM is one particularly line paths that may need to check first for this line paths will easily open or cut especially if the nokia 7230 suffered water  damaged.
If the Sim voltage line is okay and you get a voltage reading on that area. You may then proceed to suspect that the GAZOO chip is faulty, reworking the chip might help fix and solve the Nokia 7230 insert SIM card problem.