What is the use of Microsoft account?

Hi! Microsoft account is used to synchronously back up mobile phone data (contacts, text messages, settings and applications), download applications and provide space for SkyDrive. You can back up the important information of your phone, go to the phone settings-About-and reset your phone. Then open www.live.com on the computer, click "Register Now" and fill in the information to register. After successful registration, go to mobile phone settings-Email+Account-+Add Account-and log in again.

Tips: Please note that "country/region" is "China" and "birth age" is "18 years old or older" when filling in the information.