Question about Sony Ericsson Z550i Cellular Phone
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Posted on Jan 02, 2017
Here are the Master Reset codes for your phone.
Master Reset / Codes
Accessing the Service Menu - Move joystick right, press * key, move joystick left twice, press * key, move joystick left, press * key.
Checking Firmware Version - Move joystick right, press * key, move joystick left twice, press * key, move joystick left, press * key, press 1 key twice.
Show IMEI # - press * key, press # key, press 0 key, press 6 key, press # key
Manual brightness adjustment - While in camera mode, press and hold * key and move joystick to lower brightness, press and hold 0 key and move joystick to increase brightness
Quick ScreenSaver - Pressing # and * at the same time
Show screensaver and lock keypad - press * and lock keys
*#0000# - Reset language back to english
Hard Reset -Hold power for 10 seconds
Posted on May 28, 2009
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