Sony's new Xperia Z4 tablet aims to take on iPad and Surface

The new thin and waterproof Android tablet comes with a PC-like mode for adding a keyboard and turning it into a laptopSony has launched an Android tablet that doubles as a laptop when connected to a keyboard accessory, despite announcing the end of its long-running laptop line in 2014.The new Xperia Z4 tablet, announced at Mobile World Congress in Barcelona, is a slimmer, lighter and more powerful follow up to the Z2 tablet released in May and claims to be the thinnest and lightest 10in tablet