Your Apple ID is the account that you use to access all Apple services and make all of your devices work together seamlessly. Want to use Sign in with Apple on third-party apps or websites? Learn what to do.

Sign in on your iPhone, iPad, or iPod touch
Sign in on your Mac
If you use Apple services, you already have an Apple ID and don't need to create a new one. Learn how to sign in, manage, and protect your account. Not sure if you have one? It includes the email address and password that you use to sign in, and all the contact, payment, and security details that you'll use across Apple services. No matter where you create your Apple ID, just remember to use the same one to sign in to every Apple service.
Shop and Learn
Learn which of your apps are using iCloud for storage, and what is included with iCloud Backup. With the Reminders app on iOS 13 and iPadOS, you can create reminders with subtasks and attachments, and set alerts based on time and location. You can even get an alert when you're messaging someone. Stay up to date with holidays, sports, social media, and more with calendar subscriptions. And see your plans across all of your devices. Manage your contacts from your Mac or PC on iCloud. Use Notes to capture a quick thought, create checklists, sketch ideas, and more. And with iCloud, you can keep your notes updated across all your devices. Set up iCloud on your device.
That means all your stuff — photos, files, notes and more — is safe, up to date and available wherever you are. And it works automatically, so all you have to do is keep doing what you love. And when you make a change, the update is made across all your devices. You control whether they can view, share or edit each file, and you can change these settings at any time. So when you add a new phone number, bookmark a website or update a slide in a presentation, the change appears everywhere. With live updates on all your devices, your collaborators will always be on the same page. Search for an address, a funny exchange or anything else. And you can pick up every conversation exactly where you left off.