The Sony Xperia Z2 is a phone that exists because of a need to compete. Samsung and HTC are going to launch a new phone, so Sony has to as well. As it arrives just six months after the Xperia Z1, upgrades are – predictably – minor. You'd be mad to consider paying to upgrade to this phone from an Xperia Z1. However, its slight spec upgrades make it the slightly better phone.