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1 What is iCloud?

iCloud is a cloud storage and cloud computing service from Apple Inc. launched on October 12, 2011. As of 2018, the service had an estimated 850 million users, up from 782 million users in 2016. iCloud replaced Apple's MobileMe service, acting as a data syncing center for email, contacts (How To Transfer Contacts from iPhone To iPhone), calendars, bookmarks, notes, reminders (to-do lists), iWork documents, photos, and other data.

2 What Does iCloud Do?

iCloud is a cloud storage and cloud computing service that mainly enables users to store data such as documents, photos, and music on remote servers for download to iOS, macOS or Windows devices. With Find My feature in iOS, iCloud makes it handy to share and send data to other users, and to manage their Apple devices if lost or stolen.

iCloud also provides the means to wirelessly back up iOS devices directly to iCloud, instead of being reliant on manual backups to a host Mac or Windows computer using iTunes. Service users are also able to share photos, music, and games instantly by linking accounts via AirDrop wireless. Here's a short chart showing what does iCloud do.

What Does iCloud Photos Do
  • Automatically and safely stores all your photos and videos.
  • Keeps your photos up to date on all your devices and on iCloud.com.
  • Keeps your original, full-resolution photos uploaded to iCloud.
  • Leave lightweight (thumbnail) version of photos on your device.
  • Shared Albums can share photos and videos with chozen people.
    		•
    What Does iCloud Drive Do
  • Keep all document and files securely stored in iCloud Drive.
  • Access files across all your iOS devices and on iCloud.com.
  • Share files via private links.
  • Add your Mac Desktop and Documents folders to iCloud Drive.
    		•
    What Does iCloud Mail App Do
  • Keep Mail app up to date across all devices with iCloud.
  • When you make a change on one device, your Mails information is updated everywhere.
    • What Does iCloud Contacts App Do
  • Keep Contacts app up to date across all devices with iCloud.
  • When you make a change on one device, your Contacts information is updated everywhere.
    • What Does iCloud Calendar App Do
  • Keep Calendar app up to date across all devices with iCloud.
  • When you make a change on one device, your Calendar information is updated everywhere.
    • What Does iCloud Notes App Do
  • Keep Notes app up to date across all devices with iCloud.
  • When you make a change on one device, your Notes information is updated everywhere.
    • What Does iCloud Pages App Do
  • Create a Pages document and access it on all your devices with iCloud.
  • You can even edit Pages on the web with iCloud.com.
  • Share a Pages file with your friends and colleagues.
  • Collaborators can see any edits as they're made.
    • What Does iCloud Numbers App Do
  • Create a Numbers spreadsheet and access it on all your devices with iCloud.
  • You can even edit Numbers on the web with iCloud.com.
  • Share a Numbers file with your friends and colleagues.
  • Collaborators can see any edits as they're made.
    • What Does iCloud Keynote App Do
  • Create a Keynote presentation and access it on all your devices with iCloud.
  • You can even edit Keynote on the web with iCloud.com.
  • Share a Keynote file with your friends and colleagues.
  • Collaborators can see any edits as they're made.
    • What Does iCloud Messages App Do
  • Access your messages across all your devices.
  • Turn on iCloud Messages to store messages from your iPhone, iPad, iPod touch, and Mac in iCloud.
  • Your iCloud messages are kept up to date on all your devices.
  • You can start a conversation on one device and finish it on another.
    • What Does iCloud Safari App Do
  • Use iCloud Tabs, bookmarks, and reading list in Safari.
  • See the Safari websites you have open on your iOS devices, iPadOS devices, and Mac.
  • Read articles from your Reading List, even when you're offline.
  • Use the same Safari bookmarks on your iOS devices, iPadOS devices, Mac, and Windows computer.
    • What Does iCloud Backup and Restore Do
  • Automatically back up your iOS and iPadOS devices over Wi-Fi.
  • Backup your device when it's turned on, locked, and connected to a power source.
  • You can use your iCloud backup to restore your iOS or iPadOS device or seamlessly set up a new one.
    • What Does iCloud Find My iPhone App Do
  • Use Find My on your iPhone, iPad, iPod touch, or Mac to locate a lost device.
  • Lock and track your lost iPhone, or remotely erase it.
  • You can also share your location with friends and family and see their locations on a map.
  • On iCloud.com, use Find My iPhone to locate devices and Find My Friends to locate people.
    • What Does iCloud Keychain App Do
  • iCloud Keychain can keep your passwords, credit card information, and more up to date.
  • Autofill passcode on your iPhone, iPad, iPod touch, or Mac.
  • You can also access Safari passwords on a Windows computer.
    • What Does iCloud Storage Do
  • With iCloud, you get 5 GB of free storage for your mail, documents, photos, and iOS and iPadOS device backups.
  • It's easy to upgrade your iCloud storage plan at any time.
  • Your purchased music, apps, TV shows, and books don't count against your available storage.
    • What Does iCloud Family Sharing Do
  • Family Sharing allows to share music, books, apps, and more with your family.
  • Family Sharing lets up to six family members share their iTunes Store, App Store, and Apple Books purchases without sharing accounts.
  • Pay for family purchases with the same credit card and approve kids' spending right from a parent's device.
  • Share iCloud storage, photos, calendars, reminders, locations, and more.
    •
    Common iCloud Problems and Best Fixes:
  • Unable To Sign in Because Of a Problem Communicating iCloud
  • How To Recover Permanently Deleted Photos from iCloud
  • How To Free Up iCloud Storage In 6 Easy Ways
  • Fix iMessage and FaceTime Waiting for Activation

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    The Bottom Line

    Now do you understand what is iCloud and what does iCloud do? Continue reading our Complete iCloud Manual Guide to learn more about getting started and using your iCloud, iPhone, iPad and Mac.