windows phone 7 - WP7 Push Notification - Power Management -
microsoft documentation says if battery power of device critically low app not receive push notifications. if battery power low not critically low app receive raw notifications.
in these 2 cases erroroccurred event received, have show error message user explaining has happened. fine displaying error message when battery level low?
if you're not receiving messages on phone, how app know inform user. if isn't running.
when restarting app shoudl check (and if necessary re-establish) channels.
if it's appropriate let user know there problem , has been fixed. and/or previous notifications failed should so.
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