Ive had my lumia 920 since Feb. Getting sick of the basic functionality missing.
no screen orientation lock
no customization for notifications ,
no notification centre,
no LED notification,
no universal phone search ,
no way to search text messages
no functional facebook app,
no sound profiles, for vibration toggling you have to go into settings every time.
no way to exit/kill an app
At some point wp became something i have to deal with rather than something i use. So yea gonna jump ship pretty soon .