One sign-in for all the Google Services you use such as Chrome, Gmail, Maps, Search, Google Photos, YouTube and also Payments and subscriptions. The most popular service is Gmail (plus Contacts and Calendar) and there are 1.5 billion active Gmail users in the world. Android phones must have a Google Account for Play Store apps and back up. When signed in, tap or click on your profile icon in a Google app or Google webpage to easily access your Google Account from any device. Sign in at www.accounts.google.com, access all the services you use and see your account information