Sometimes a OnPage contact does not want their personal phone number to appear when calling back the sender of an alert. The solution is to dial back with the prefix of *76 67 which will block the caller ID from displaying when the call is received.
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An alert comes into your OnPage app with a call back number.
Click on the call back number.
Add *76 67 before the call back number in the dialing window.
Launch the call. You incoming call will not display the number you are calling from.
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