pretty title. have app register device receive push notifications when runs, need unregister device when uninstalls. how to?
i guess write uninstall in meaning of deleting app device?
unregistering gcm on device-side may take several minutes , therefor can not done on uninstall, see answers here.
your server should stop sending push notifications. if tries gcm returns notregistered-error, see docs here.
if you're using appcelerator services notifications error comes servers.
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