The process is as simple as receiving a verification code on the number provided during the sign-up process to confirm it without further verification.

You can change your phone number on Uber by going into your app settings. You may be asked to verify your phone number by either entering a verification code (which you'd get via text) or by ...

When you change your number on Telegram, all your chat history, contacts, messages, and media will be moved to your new number. You must enter a verification code sent to your new mobile number.

Two-step verification can better secure and safeguard your account. Here's how to set it up.