Below the Account submenu, you can set up Family Sharing to help share purchased music and the like with family members; there's also a new Storage section, which split off from iOS 7's Storage & Backup screen.
The Photos subscreen lets you enable or disable iCloud Photo Library; there's also a toggle for automatically uploading Burst Photos.
Within the iCloud Drive subscreen, you can toggle the feature on or off; there's also a section for third-party apps that have looked you up by your email, along with a list of installed third-party apps on your device that can use iCloud Drive.
As mentioned earlier, iCloud Backup has become its own separate submenu, with an on/off toggle and a Back Up Now button. Also new in the iCloud section: a new toggle within the submenu for Find My iPhone called "Send Last Location;" in case of your device's loss, Apple will beam your device's last known location before shutdown to your iCloud account.
There are also two new sections within iCloud's new Advanced subheader: Mail and Share My Location. The Mail subscreen lets you choose a default address for iCloud, along with choosing aliases and your SMTP server; Share My Location offers the same preferences that the screen of the same name in the Privacy subscreen does.
iTunes & App Store
The iTunes & App Store section is relatively unchanged, though it does move up in the Settings screen, grouped just after the iCloud screen. There are four new toggles: Two for showing all your music and video, and two for displaying suggested third-party apps that tie into your current location on the Lock screen, Home screen, and in the app switcher (née multitasking screen).
Mail, Contacts, Calendars
The Mail, Contacts, Calendars Settings screen gets a bunch of little settings improvements. For Mail, there's a new Swipe options submenu, which lets you choose a mail action for the app's quick left/right swipe gestures; in addition, you can flag addresses that don't end with a certain domain name.
Contacts just gets one new preference, and that's whether or not your people should show up in the app switcher. Calendars has a few new options, including alternate calendars for Chinese, Hebrew, and Islamic people; a toggle for Week Numbers when viewing the app by month; a toggle for "Show Invite Declines," and a new "Time to Leave" toggle that estimates your departure time if you add an address to your calendar event.
Most of Messages' new settings revolve around multimedia: You can now choose whether to keep your messages for 30 days, one year, or forever; audio and video messages can be set to expire within two minutes after reading (in true James Bond style) and then deleted, or also kept around forever. Message also incorporates a toggle for Raise to Listen, which lets you put the device to your ear to trigger Dictation for a conversation.
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