Find your own phone number on an Android-powered phone by going to the Settings menu, selecting About Phone or About Device, and selecting Status or Phone Identity. On iOS devices, go to Settings, and select Phone. Your number is displayed at the top of these screens.
On a Windows Phone, you can find your number by swiping left from the home screen and selecting Settings. Select Applications, and find the section labeled Phone. Your number is displayed in this section.
Your phone number is also available in the control panel for your mobile phone account. Visit the website for your service provider, and log in to the account management interface. Your phone number is displayed alongside your other account information.