Giving up your personal phone number to telemarketers or during transactions on Facebook Marketplace and Craigslist isn't ideal. Instead of divulging private details to people you don't know, you can ...

Offering usernames will allow people to stop giving out their phone number —a sensitive piece of information— in order to connect with others on the messaging app. Encrypted messaging service Signal ...

WhatsApp is testing a new feature that will let users chat and call using usernames instead of phone numbers. Here’s how the ...

You can block or unblock a number on an Android phone using the built-in Phone app's "Blocked numbers" menu.

You can change your phone number on WhatsApp whether you're still using the same phone, or you're using a new phone.

Greg Cohn at Ad Hoc Labs. Greg Cohn sees phone numbers not as a string of digits but as a digital identifier, like an email address. But unlike email, where one person is likely to have two, three or ...