LTE-U: on the way to 5G

Ericsson and Qualcomm are promoting their new technology, LTE-U. Is it any better that LTE-A? And what is this combinations of letters supposed to mean, after all?
My risky gamble: 24 hours without smartphone

A bottle of good scotch in exchange for a day without a smartphone? Would I dare? That's a piece of cake! That's what I thought. As it turned out, it's not that simple nowadays