As of late, Sony Mobile has been making some pretty decent smartphones, but it destroys any chances of them succeeding by slapping massive price tags on them. The relatively new Xperia XZ is one of these phones; it's nice, but $700 nice? Not to most. However, with this latest markdown by Amazon, you can grab an XZ with a US warranty for $649.99, $50 less than the MSRP.Unfortunately, the fact that this XZ carries a US warranty means that its side-mounted fingerprint sensor has been disabled (it can be re-enabled with a firmware flash). That being said, the rest of the phone's specs are still solid; they include a 5.2" 1080p display with Gorilla Glass 4, a Snapdragon 820, 3GB of RAM, 32GB of internal storage, a 23MP camera, and 2900mAh battery. In addition, despite its unassuming appearance, it's IP68 water and dust-resistant.Amazon has discounted all three colors (black, blue, and silver) to $649.99. Since the phone is being shipped and sold by Amazon, you'll get fast shipping if you're a Prime member. You also won't have to deal with third-party sellers, who can be a pain to deal with sometimes. We're not sure how long this offer will last, so if you've been on the lookout for an Xperia XZ, you may want to jump on this soon.Source: Amazon