Open the Phone app
Tap the menu or settings icon
Select Settings
Tap Calls or Calling accounts
Tap Additional settings or More settings
Tap Caller ID
Select Hide number
Save the changes
On iPhone, open Settings
Tap Phone
Tap Show My Caller ID
Turn off Show My Caller ID
Before dialing, enter the caller ID blocking code for your country
For many regions, use *67 before the number
Dial the full number after the code
Contact your mobile carrier
Request permanent caller ID blocking
Ask for number privacy on outgoing calls
Use a secondary phone number or VoIP number
Use a calling app with caller ID controls
Check the app’s privacy or caller ID settings