Software

Secret Menus

Service Menu

How to access

  1. open the main menu
  2. type ***67#

Function

exposes administrative options

Internal Service menu

How to access

  1. open the main menu
  2. type **888#

Function

exposes internal administrative options

Master reset

How to access

  1. open the main menu
  2. type ***778#
  3. type in master as Password

Function

master reset of the handset

Test menu

How to access

  1. open the main menu
  2. type **78#

Function

list of tests to verify if your handset is working correctly (the quick test should probably be enough)

Boot menu

How to access

  1. shutdown your handset
  2. start it
  3. as soon as the led lights up press the volume up and the volume down button (or the upper and lower side button)
  4. hold until the screen shows S T O P !
  5. here you can use all other secret menus (be it with limited options)
  6. most useful is the master reset with ***778#