UpdatedWith PS4 Remote Play on board, is this a flagship phone you should be considering?
UpdatedSony's new phone is small in size only - it packs such a mighty punch that Samsung and HTC should worry.
VersusWe pit Sony's latest flagship, the Xperia Z3, against its compact variant to see which is best.
Things aren't great for Sony right now, and the remedy might be to sell off yet more divisions. Is it RIP for Xperia?
CES 2015It looks like Sony could bring out two Xperia Z4s this year, with the display resolution the key distinguishing feature.