These codes are used to override specific network settings rather than unblocking a contact in your address book.
If you have a permanent block on your caller ID (meaning your calls show up as "Private" or "Unknown") and you want to show your identity for a specific call, you can use .
On some Android devices and GSM networks, dialing #31# can disable an outgoing "private number" setting for all calls. How to Unblock a Number Manually
Detailed visual guides for various Android builds are available on Avast . Block or unblock a phone number - Google Help code for unblocking phone number
If you need help with a specific model, Google Help provides official steps for the standard Android Phone app.
The correct phrase is:
If you have blocked someone else and want to use a dial-pad code to remove them from your restricted list, use these standard landline and carrier codes: These codes are used to override specific network
For most smartphones, you must use the internal settings to remove a number from your "Blacklist" or "Blocked" list. Open the Phone app .
In some regions, this code activates caller ID delivery if it has been disabled at the network level.
If you're using an iOS device, follow these steps to unblock a phone number: How to Unblock a Number Manually Detailed visual
If you have permanently blocked your own outgoing Caller ID, you can dial *82 before the phone number to show your identity for that specific call. Carrier Call Rejection ( *80 or *87 ):
On many landlines (like AT&T), dialing *80 can unblock all numbers in the Selective Call Rejection system.
On many global GSM networks (like AT&T or T-Mobile), dialing *31# followed by the number will unblock your caller ID for that call. 2. Codes to Manage Your Blocked List (Incoming)