Amazing.. I'll keep it on and see how it goes, it's not my main phone but I still use it quite a lot, the usual browse, im, cutetube, internet radio, some games etc, from what I've seen so far the thing will go on till the battery fails. At one point I was convinced it needs a restart after the cpu got locked at 100% and 1ghz after a session of Angry Birds, just left it for an hour or two, got back to it, something probably restarted and all was fine