How To Hide your phone number On Samsung Galaxy Ace

If you want to hide your phone number for ALL of your contacts, under your Samsung Galaxy, follow the below procedure:

• From the Homescreen go to:
• Settings > Call settings > Additional settings > wait: your phone scans a few seconds.
• The Caller ID menu shall be displayed, check "Hide Number"
• Your new settings will be saved, tap on back to return to the homescreen.

This manipulation works with most of the Android phones

Note that: If you want to hide your number when calling a particular contact, here is a simpler method:
Simply precede the phone number you are dailing with "#31#".