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Firing up the device, you're not really greeted by a home screen, and there isn't a home button either. Instead, you'll see the screen with open/running apps displayed as an Active Frame (denoted by a slightly different icon to the left of the app screen indicators), similar to Windows Live tiles.
Developers also have access to this functionality, and can build apps that use the live update aspect of Active Frames.
The most recently used app is always top left of the screen and up to eight of the most recently running apps can be shown. In the image above, the app in the bottom left-hand corner is the system's File Manager, which gives a live display of how much space is left in each area: the SD card, the internal storage and in a linked Dropbox account.
Swiping from right to left from this screen takes you to a traditional list of apps, similar to those found on iOS and Android. These are split into pages of 16 icons, and you can also create folders of apps by dropping them on top of each other.
Ahead of the launch of BlackBerry 10, BlackBerry realised that it would need big-name apps in the BlackBerry World app store on day one. Out of the box, the Z10 comes with apps such as Facebook, Twitter, LinkedIn, Foursquare, YouTube, Box, DropBox, Flixster and some news apps pre-installed. There's also the obligatory Angry Birds game (Star Wars edition, if it's a deal-breaker).
It also comes with a new version of BlackBerry Messenger (BBM) that now includes video calling, bringing the service in line with similar offerings such as Skype or Apple's FaceTime. BlackBerry 10 users can make BBM video calls with other BlackBerry 10 users and PlayBook owners, but with older BlackBerry handsets, they'll only be able to make voice calls.
Hub is one of the three main concepts underpinning BlackBerry 10 (along with Peak and Flow).
BlackBerry Hub is the integrated inbox with all your messages and communications including calls, text messages, work email, personal email, social networking updates or calendar notifications.
If that all sounds a bit much, you can filter the inbox by service, so that you're only looking at one of those categories, for example.