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Bluetooth, Wireless LAN and GPS connection  problem can be cause by a firmware failure and can be easily be fix by restoring, updating or flashing the phones firmware again. But after doing any firmware repair and the problem still exists the problem may certainly lies on the hardware components failures.

This solution below  may possibly useful and help fix and repair Nokia X6 Bluetooth, WLAN and GPS problem issues for it shows the Bluetooh, WLAN and GPS component circuit.
Repair Hints: Ensure that the firmware of the device is successfully calibrated, upgraded and restored.
1) Check all corresponding supply voltages in the circuit
2) Check the RF buffer clock  feeds from the RF circuit
3) Check the Bluetooth and WLAN antenna
4) Rework the Bluetooth IC first,  the WLAN will not work if the Bluetooth IC is faulty.

An example of this solution picture below is for memory card problem repair guide.

Nokia 5000 No Network Signal Problem Solution

This solution packed covers the following picture guide for locating components on the following damaged hardware problem issues: MMC, bluetooth, local mode, backlight, hands free and keypad.

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Today I share Nokia 1800 all hardware problems solution.Nokia 1800 may be many problems there are all solution.