Model: Treo 180 & 270
- Turn ON your phone without a SIM Card
- Enter *#*#Unlock Code#
Model: Treo 600, 650, 680 (Centro), 750
- Insert an unauthorized SIM Card and turn ON your phone
- It will then display “Your phone cannot be used with this SIM card”
- Click OK
- Click the dial pad tab, bottom of the screen, far left
- Using stylus enter *#*#Unlock Code#
- Press the green button
- It will then display “The SIM Lock has been removed from the phone”
Troubleshooting:
Error Message: “The SIM Lock has NOT been removed from this phone”
- Solution 1: Please make sure you are entering the correct code and enter it using this method: *#*#Unlock Code# dial
- Solution 2: If the phone says that the SIM lock has not been removed, ensure that the phone radio (wireless mode) is on
