How To Unlock PalmOne Treo:
Model: Treo 180 & 270
1. Turn ON your phone without Sim Card
2. Enter *#*#Unlock Code#
Model: Treo 600, 650, 680 (Centro), 750
1. Insert an unauthorized Sim Card and turn ON your phone
2. It will then say "Your phone cannot be used with this SIM card"
3. Click OK
4. Click dial pad tab, bottom of the screen far left
5. Using stylus enter *#*#Unlock Code#
6. Press the green button
7. It will then say “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
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