I have the 2.3Ghz/4GB version. Many are complaining about its battery life, but for me its average, considering the specs. Ive had this phone for a month and I usually get around 5 hours screen-on time(SOT). So far, my maximum SOT is 6 hours and 12 minutes with 4% remaining on battery. I had to uninstall/disable a bunch of bloatware, though. I also use Auto-Start Manager(pre-installed) and Greenify(downloaded) to help save battery.also it have lots of other specifications too so I recomend you to buythis cuse this high end device will create an impact