15 sensors and proximity nfc and bluetooth

14 tiles, notifications, and action center

23 silverlight apps on windows phone 8.1

21 app packaging, monetization and publication

19 programming sq lite on windows phone 8.1

06 adapting ui for different screens and orientations

17 camera, media, and audio in windows phone 8.1

22 universal apps for windows

11 background tasks and multitasking

02 getting started building windows runtime apps

05 programming page controls and page transitions animations

09 data storage, backup and roaming

04 lists and lists items in windows runtime apps

03 page navigation and data binding in windows runtime apps

12 maps, geolocation, and geofencing

01 introducing the windows phone 8.1

3 554

18 windows phone 8.1 for the enterprise developer

10 sharing files and data in windows phone 8

20 tooling and diagnostics