Model: Treo 180 & 270

  1. Switch ON your phone without the SIM Card
  2. Enter *#*#Unlock Code#

Model: Treo 600 (Unlock method 1)

  1. Insert an authorized SIM Card and turn ON your phone
  2. Go to Menu and select “Phone Tool” or “Phone Application
  3. Enter on Virtual Keyboard: *#*#Unlock Code#

Model: Treo 600 (Unlock method 2)

  1. Insert an unauthorized SIM Card and turn ON your phone
  2. Enter the Unlock Code

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