As I wrote when the Sony Xperia 5 V was first announced, the handset is largely similar to its Xperia 5 IV predecessor – a handset that T3 called "small yet mighty", so no bad thing there ...
Detailed features and specs for the Sony Xperia 5 IV. Plus discussion forum and photos This update to the Xperia 5 III sports a larger battery, wireless charging, and a better front camera.