I had this EXACT same issue this week. Beeping, power share screen. Everything. Had to get it warrantied. Mine is an AT&T Note 5. Not sure what cause it, but I wasn't going to deal with it.
I want the Nexus 5x because the og Nexus 5 was the best phone I've ever owned and this seems onto build on that awesomness.
Posted via the Android Central App
http://www.amazon.com/Wireless-Charger-Lighting-Qi-Enabled-Included/dp/B015351VC2/ref=sr_1_6?ie=UTF8&qid=1442644616&sr=8-6&keywords=qi+fast+charger&t=androidcentral00-20&tag=hawk-future-20&ascsubtag=UUacUvbUpU4693902
Might order this one and see how it works. Half the price of the Samsung...