HTC's cryptic 'U' teasing of the last few weeks has led to two new handsets: the HTC U Ultra and the HTC U Play.These new phones feature a new glass design, but also come with a new artificial intelligence (AI) companion.The U Ultra is the most impressive of the two, coming with a Qualcomm Snapdragon 821 chipset, a large QHD 5.7-inch screen, USB-C...