Many people have asked how to unlock the Treo 650 branded by Cingular as well as many other popular phones. I do not in any way support or supply unlocking codes; but I was able to obtain the steps involved once you have these said codes. I will be compiling a list of reliable unlocking sources in the near future, if you can recommend any please submit them below.

Reminder: I cannot be held responsible for the accuracy of the content, please use with caution, I will no way be held liable for any damages caused to your phone.Just a simple disclaimer to cover my back.

Treo 650:
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Insert original SIM into device
• Power on the device ( ensure phone is in wireless mode)
• Press the green Phone button
• Enter * # * # unlock code #
• Press Dial

Device is now unlocked

Blackberry 3.7.1
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Insert original SIM into device
• Power phone on and Turn off the radio (Turn Wireless Off option) VERY IMPORTANT.
• Select “Options”
• Scroll down and select “SIM Card”
• Hold down and type “MPED”
• Hold down and type “MEP2”
• Enter the Unlock Code
• Press enter & reboot the device

Device is now unlocked

Blackberry 3.8/4.0
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Insert original SIM into device
• Power phone on and Turn off the radio (Turn Wireless Off option) VERY IMPORTANT.
• Select “Options”
• Scroll down and select “SIM Card”
• Type “MPED”
• Type “MEP2”
• Enter the Unlock Code
• Press enter & reboot the device

Device is now unlocked

Blackberry 7100g
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Insert original SIM into device
• Power phone on and Turn off the radio (Turn Wireless Off option) VERY IMPORTANT.
• Select “Options”
• Scroll down and select “SIM Card”
• Type “MPED” (multitap means this will be typed in [M] [ER] [OP] [OP] [DF])
• Type “MEP2” (multitap means this will be typed in [M] [ER] [OP] [OP] [TY])
• Enter the Unlock Code
• Press enter & reboot the device

Device is now unlocked

LG
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Insert new SIM card
• Power on the handset - phone will display “phone restricted”
• Select “Cancel” - phone will display “phone restriction code”
• Enter the SIM Unlock code - the handset is now successfully unlocked

Motorola
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Insert new SIM card
• Power on the handset - wait a few moments allowing your phone to fully power up
• You will be prompted to enter the unlock code - Enter unlock code
• Press OK - the handset is then successfully unlocked

Nokia
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Power on the handset (any SIM card)
• Press the # key once
• Press the * key three times (will display a “P”)
• Press the *key four times (will display a “W”)
• Press the * key two times (will display a “+” sign)
• Enter the unlock code
• Press the * key two times (will display a “+” sign)
• Press the 1 key
• Press the # key one time

Device is now unlocked

Samsung
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Power on the handset
• Enter # 0 1 1 1 * unlock code, #
• Press the SEND key
• Display should read “Personalization Cancelled” , if the display reads “Not Yet Personalized” the handset was already unlocked

Device is now unlocked

Sony Ericsson (not z500a)
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• Insert new SIM card
• Power on the handset
• Press the left Arrow (< ) button
• Press the star (*) button twice
• Press the left Arrow (< ) button
• display will indicate “ME Lock”
• wait approximately 3 seconds
• the display will indicate “Network” and a picture of a closed lock
• Press Yes - the display will indicate “Unlock?”
• Press Yes - the display will indicate “Enter NCK”
• Enter the SIM Unlock code -Press Yes
• The handset will display “Network” and a picture of an open lock for three seconds and will then revert to the main display.

Device is now unlocked

Sony Ericsson z500a
Note - If this process is unsuccessful five times in a row, the phone will be permanently locked.

• No SIM in device
• Power on the handset - display will indicate “Insert SIM”
• Press the left Arrow (< ) button
• Press the star (*) button twice
• Press the left Arrow (< ) button
• phone will briefly display “Personalized with MNC2″ or “Personalized with MNC3″
• wait approximately 3 seconds
• the display will indicate “Network” and a picture of a closed lock
• Press Select
• the display will indicate “Unlock (Net)5″ and “NCK:”
• Enter the SIM Unlock code
• Press OK - The handset will display “Network unlocked” and the display “Insert SIM” appears.

Device is now unlocked