Sony Xperia 10 IV (6GB/128GB): £429 / €499 (~$515) The Xperia 10 IV is the latest mid-ranger from Sony, making minor improvements to the Xperia 10 III and coming in well below the flagship The Xperia Pro is essentially an Xperia 1 II repackaged into a new slightly bigger body with the addition of a micro-HDMI port. It looks unabashedly plain and utilitarian, which is appropriate for Sony Xperia 1 IV review: Battery and charging The Xperia 1 IV comes with a well-sized 5,000 mAh battery, but after two hours watching YouTube over Wi-Fi, the battery life had dropped by 22%. KWTaL.