Well after a long time without notifications I gave up on my HTC 8x. I have never or very seldom had notifications from whatsapp, viber, facebook etc. whats a smartphone without these notifications...Truth is, when it comes to notifications, a 20$ china made android phone works better than the much more expensive windows phone...I bought my HTC almost 10 months ago and this has been always a pain, is it so hard to address this issue I do not understand. Finally I gave it away, and now I get notifications on my other phone right on time...