The Brownlee brothers have partnered with Sony for an autumn endurance test showcasing the battery life of their latest flagship smartphone, Xperia Z3, which boasts an unprecedented two-day battery life. The triathlete brothers were tasked with completing a series of different running, cycling and swimming challenges over two full days, all the while checking in on the … [Read more...] about Brownlee brothers challenge Xperia Z3 two-day battery life promise