Verizon
Turn on
*72{number} Turn off
*73 Notes Dial *72 immediately followed by the 10 digits, then Call. Two beeps.
Call-forwarding codes by carrier
iOS may treat an in-app tap that dials a forwarding code as potential malware. Copy the code, open the Phone app yourself, paste it, and dial. Auto-dial from our app is optional and often blocked.
These are your carrier’s unconditional forward-all codes so inbound calls reach your Block The Calls number. Confirm against your carrier’s own support page if anything looks off. {number} is the 10-digit number we show in the app unless noted.
We are not a phone company. 911 and ordinary outbound calls stay on your native Phone app. After you dial, use Test forwarding in the app. We call your number from our network. The app does not dial our number to “test.”
United States
AT&T
Turn on
*21*{number}# Turn off
#21# Notes Include the #.
T-Mobile
Turn on
*21*{number}# Turn off
##21# Notes Off is two hashes.
US Cellular
Turn on
*72 + leading 1 + number Turn off
*720 Notes Example *7214375551234.
Google Fi
Turn on Fi app / fi.google.com
Turn off Fi app
Notes No star codes.
Mint Mobile
Turn on
*21*{number}# Turn off
##21# Notes Same as T-Mobile.
Metro by T-Mobile
Turn on
*21*{number}# Turn off
##21# Notes Same as T-Mobile.
Cricket
Turn on
*21*{number}# Turn off
#21# Notes Same as AT&T.
Boost Mobile
Turn on
*72{number} Turn off
*720 Notes Two beeps. Can vary by device.
Spectrum Mobile
Turn on
*72{number} Turn off
*73 Notes Same as Verizon.
Visible
Turn on
*72{number} Turn off
*73 Notes Same as Verizon.
| Carrier | Turn on | Turn off | Notes |
|---|---|---|---|
| Verizon | *72{number} | *73 | Dial *72 immediately followed by the 10 digits, then Call. Two beeps. |
| AT&T | *21*{number}# | #21# | Include the #. |
| T-Mobile | *21*{number}# | ##21# | Off is two hashes. |
| US Cellular | *72 + leading 1 + number | *720 | Example *7214375551234. |
| Google Fi | Fi app / fi.google.com | Fi app | No star codes. |
| Mint Mobile | *21*{number}# | ##21# | Same as T-Mobile. |
| Metro by T-Mobile | *21*{number}# | ##21# | Same as T-Mobile. |
| Cricket | *21*{number}# | #21# | Same as AT&T. |
| Boost Mobile | *72{number} | *720 | Two beeps. Can vary by device. |
| Spectrum Mobile | *72{number} | *73 | Same as Verizon. |
| Visible | *72{number} | *73 | Same as Verizon. |
Source of these rows: the same carrier table the iOS app ships. If the app and this page disagree, the app build you are running wins. If something looks wrong, tell us.
Keep reading
Apple, Google, and carrier tools: what they can and cannot do
Caller ID spoofing and what STIR/SHAKEN can, and cannot, prove
Apply to be a beta tester
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