Sign in with your Apple ID – Apple Support
Open the Settings app. · Tap Sign in to your [device]. On iPhone, sign in to your Apple ID in the Settings app · Enter your Apple ID and password.
Apple iCloud
Sign in to iCloud to access your photos, videos, documents, notes, contacts, and more. Use your Apple ID or create a new account to start using Apple …
How to Sign Into Apps and Websites With Your Apple ID | PCMag
At the login screen, choose the option to Sign in with Apple or Continue with Apple. At the next screen asking if you want to use your Apple ID, tap Continue.