HTC just can't catch a break. The company's smartphone sales are down, fuelling consecutive quarterly losses. To bounce back, HTC needs its latest flagship, the HTC 10, to pick up steam -- and fast. But that's unlikely to happen now that T-Mobile, one of the biggest carriers in the US, has quietly dropped the Android handset. It's not clear exactly when the smartphone disappeared from store shelves, but a Reddit post has it pegged at July 21st. That's only two months since the phone went on sale at the so-called "un-carrier." The more worrying part is that barely anyone seemed to notice.