Diagnose the HTC hardware function with HTC Function Test (*#*#3424#*#*)

The HTC Android smartphones including the new HTC Butterfly and the HTC One series come with a hidden diagnostic software that enables you to test on its parts and hardware.

Just go to the phone dialer and dial this sequent: *#*#3424#*#*

The HTC Function Test diagnostic software will be brought up.

The tests available are:

• Audio test
• Backlight test
• Bluetooth test
• Button test
• Charger test
• Flashlight test
• G-Sensor test
• Headset test
• LED test
• Light-sensor test
• Line drawing test
• P-sensor test
• SD card + camera test
• Vibrator test
• Wi-Fi test

You can tap on the "Select All" button and then the "Run" button to run all the tests above. If you are unable to see the "Run" button on your screen, just scroll down the screen. It is located at the bottom.

There are some more tests available after you tap on the "More" button:

• Battery test
• Device information
• Factory data reset
• AGPS test
• Hardware information
• Live call test
• Safe mode
• Software version
• Line drawing test (no time-limit)

This HTC Function Test is particularly useful when you want to buy a new or used HTC Android smartphone. You might want to make sure the phone is working perfectly before making your payment to the seller.