How to Hide Phone Number on Samsung Galaxy

Open the Phone app.

It’s the green icon with a white phone receiver. You’ll usually find it on the home screen.

Open the More menu.

The "More" menu has three dots in a vertical line. You'll see it at the top-right corner of the screen.

Select the Settings option on the menu.

Tap Settings to expand settings for the Phone app.

Open your Caller ID preferences.

The switch to hide your phone number is in your Caller ID settings. To get there, scroll down to the bottom, select More Settings, and then choose Show my caller ID. A menu will expand.

Hide your phone number from caller ID.

Tap Hide number on the menu. Your phone number is now hidden from whoever you call from your Galaxy.