After receiving the phone on Friday, I took it to a wedding on Saturday, with no hope of charging. I generally run any phone at hourly sync on all accounts, turned off wifi and used both Zoe and camera, with a spot of on screen editing. I also turned off the 4G radio. The phone came off charge at 5.45am at 100% and I got home at 01.00am the following morning with 41% left. Internet had been used in the day, but an interesting point I noted is that by switching from the standard launcher to Launcher8, which mimics the WinPho8 UI (yes, I like the way that works), I seem to be getting better battery life, even with widgets on display. Not sure why, but that 19 hour run for a 60% drop was pretty impressive.