Streaming is great until you're 30,000 feet up, riding the subway, or stuck on a network that suddenly drops to dial-up-slow speeds. That's why Amazon's offline access remains one of Prime Video's best perks. Amazon introduced mobile downloads back in 2015, beating Netflix and Hulu to the punch, and the workflow hasn't changed much since. Today, if you're a paying Prime or Prime Video subscriber (or part of a paying family account), you can stash almost any title on your iPhone or Android pho...
