Sony Xperia Z2
Xperia Z series phones are very popular, mainly for their water proof feature. You can take under water HD videos and photos using Sony Xperia Z2 android smartphone. Sony has Z3 currently in market and will release Z4 in mid 2015 still, Z2 is the best smartphone from sony and has decent hardware and specification to run Android smoothly for all your tasks.
Xperia Z2 comes with Android 4.4.4 kitkat and promised to receive the update Android 5.0 Lollipop. It has Triluminous Display and X-Reality Engine for producing the same vivid, super sharp, colorful images and videos on the 5.2 inch screen. It has Snapdragon 801 Quad-core 2.5 GHz Krait 400 processor with 3GB RAM installed. Supper memory expansion of up to 128 GB. The camera is 20.7 megapixel with LED Flash, so your pictures will definitely look gorgeous when you take using this mobile camera.
4K Camera: Xperia Z2 comes with an advanced camera that lets you record 4k videos using your mobile phone.
Sony Xperia Z2 gives 15 hours of 2G talktime and 19 hours of 3G talktime. You can enjoy music and videos anytime anywhere with its 3200 mAh battery capacity. Simply turn on the Stamina mode which is exclusive for Xperia phones to get more battery juice when you are on traveling.
Price: $400 (and above)
GET IT: from Amazon