Z5 Premium vs Z5 Compact vs Z3 in 4K video recording overheat test (video)

As you can see in the 4K video recording test with all recent Xperias and their predecessors below, the phones reach very respectable video duration before the usual heat warnings that often happen when you try to record in this ultra high definition pop up. Granted, the Snapdragon 810 chipset might still be getting thermally throttled, and yet Sony knows the issues with Snapdragon 810, so it has probably put the phones through extensive testing, and/or applied thermal management techniques such for better heat dissipation. 

Whatever it is, it seems to be working, and, somewhat unsurprisingly, the largest phone in the stable that has the most space for heat dissipation - Sony's Xperia Z5 Premium - manages to last the longest. It recorded 4K video for close to an hour, filling 20 GB before the warning pop up appeared, so you can rest assure that your 4K-on-4K shenanigans with the Z5 Premium can lost longer than the available free space on the phone.