EVENTPHONE - Wiki

1. prex “esc” 2 times
2. prex the »> key
3. type: ““***76# ”

Prerequisite: Phone turned off

1. Hold key 4
2. Turn phone on still holding key 4
3. Hold Key 4 until menu appears

This menu holds tests for Keyboard, Display and Audio, Reset to Factory Defaults, DECT Monitor, Headset (MT-F only), Sensors (C5 only)

1. Hold key 5
2. Turn phone on still holding key 5
3. Hold Key 5 until menu appears

This menu holds a radio test mode. No idea what this is good for.

1. Hold key 6
2. Turn phone on still holding key 6
3. Hold Key 6 until menu appears

This menu holds tests for ambient lighting, accumulator, infrared (if present), display, colors, RAM and proximity sensor

1. Hold 1 + 4 + 7 while powering on the phone
2. Enter the key sequence 76200