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To enable the lock feature
1.Click the Locked/Unlocked icon located in Detail Drawer of the Sprint PCS Connection Manager interface.
2.The Enter Lock Code window appears.
3.Enter your lock code and click OK.
Tip: Your default lock code is the last four digits of your Sprint PCS Connection Card's phone number. If you can't recall your card’s phone number, go to Menu>Device Info and Diagnostics or call Sprint Customer Service at 1-
46 | Section 2A: Sprint PCS Connection Manager Software |