To be quite frank, I turned everything possible on. You buy a new device you want to see what it can do. You dont buy a ferrari to do 30mph on a 70mph road. First 3 days I let the battery drain quickly but I didnt mind as i was enjoying what I saw. Then i started to realise I had charged it twice in once day to find it was 30% before bed time. That is not good. I am slowly turning off functionalities - although left the haptic feedback on as i'm lost without it (it really is quite good). Anyway today i've had a much better result from the nightly charge. It's been 12 hours so far (charged for 10 mins during the day as I was using it in mass storage) and I have 42% left. I've spent 20 mins on a phone call, a few text messages, music for 30 mins, no web browsing, no videos. Wifi has been on the whole day (working from home) - so this makes me think 3G might be a culprit here. Anyway to switch to 2G?