It's a really tall phone with the 21:9 aspect ratio. I had done my research and it still took me by surprise. Just an FYI. This phone is incredible! With 8GB RAM and the latest snapdragon processor everything is very snappy and games run really well. the super wide screen is great for games that scale to fill it or any content shot in 21:9. Honestly it has the best speakers I've ever heard on a phone, and the basic headphones that come with it sound incredible. I'm not much of a photographer but the cameras, for both photo and video, absolutely blew me away. Although it's RRP is very pricey, I felt that the £741 I won it for was a bargain and its well worth the money. Colours pop out on the lovely 4k screen and it's a delight to use. Sony apps are fantastic where included, and very little bloatware at all. This device is an absolute pleasure to use.
The main reasons for me to buy it were its camera (and its pro features), 4K display, micro-SD slot, and the 3.5mm plug. I wish the phone were slightly bigger (wider) the screen size around 7 inches instead of 6.5. The phone feels very solid, made of metal not plastic.