1 Because Windows Phone 7 was launched three and a half years

1
Because Windows Phone 7 was launched three and a half years after the iPhone, it has benefited from the lessons learned by older revisions of iOS.  The latest generation of mobile devices are portable enough to carry at all times, connected to voice and data networks, and contextually aware by using sensors and networks to preemptively complete tasks.  Many of today’s mobile applications are personalized, and are not useful if they can only access the data on the phone.  For a user to get, for example, sports scores, retrieve stock quotes, or perform accounting work, the mobile device needs to communicate with one or more servers, starting with the Window servers. 
How does offline storage impact data between application runs?
Why is it important to setup push channels and notifications?
Identify parallels between iOS, Android, and Windows Phone 7 when doing UI and back-end development.
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