How to log into your Facebook account using your email, phone number or username., Find out what to do if you're having trouble logging in, or learn how to log out of Facebook., Visit facebook.com/login/identify in a browser. Enter an email address or phone number you think might be associated with your account. Make sure that the account that comes up is yours. If it isn’t, click Not you? and try searching with a different phone number or email address., Get support to recover your account. For best results, use a device you've used to log in before., Log into Facebook to start sharing and connecting with your friends, family, and people you know., Luckily, logging into Facebook usually just requires your email and password. Here's how to log into Facebook using your Mac, PC, iPhone, or Android device..