How to block cell phone number when calling

When you make calls, you can hide your caller ID from people you call. You can also decide which phone number you want to make calls and send messages from.

Hide your caller ID for all calls

Important: When you hide your caller ID on one device, it’s hidden on all devices with the same Google Voice account.

1. Open the Google Voice app
   
   .
2. At the top left, tap Menu Settings.
3. Under “Calls,” turn on Anonymous caller ID .
   • If you want to show your phone number to people you call, turn off Anonymous caller ID .

Hide your caller ID for individual calls

If you don't hide your caller ID for all calls, you can temporarily hide it for individual calls.

1. Open the Google Voice app .
2. At the bottom, tap Calls
   
   .
3. Enter the prefix used to block your caller ID.
   • This prefix depends on the country or region your Google Voice number is from. For example, if your Google Voice number is from the US, your prefix is “*67.” You always use the same prefix for all numbers you call.
4. Enter the phone number.
5. Tap Call 
   
   .

Choose which number shows on your caller ID

If you have more than one Google Voice number, you can choose which number shows when you make calls and send messages.

1. Open the Google Voice app .
2. At the top left, tap Menu Settings.
3. Under “Outbound caller ID,” choose the phone number you want to make calls and send messages from.

If you don’t want to get calls from a certain phone number, you can block it. When the number tries to call you, your phone declines the call automatically.

Important: Some of these steps only work on Android 6.0 and up. Learn how to check your Android version.

Block a number

1. Open your Phone app .
2. Tap More
   
    
   
    Call history .
3. Tap a call from the number you want to block.
4. Tap Block / report spam.

Tip: If visual voicemail is on, blocked callers cannot leave voicemails.  Learn how to turn on visual voicemail.

Block unknown numbers

1. Open your Phone app .
2. Tap More
   
   .
3. Tap Settings
   
    Blocked numbers.
4. Turn on Unknown.

This will block calls from private or unidentified numbers.  You will still receive calls from phone numbers that are not stored in your contacts. 

Unblock a number

1. Open your Phone app .
2. Tap More 
   
   .
3. Tap Settings
   
   Blocked numbers.
4. Next to the number you want to unblock, tap Clear 
   
    Unblock.

Tip: Any calls you got from the number while it was blocked won't show in your call history.

Can you block cell number when calling?

Does * 67 still work on iPhone?