I just ordered my extended battery a few days ago. Battery life on this phone is a real tradeoff for an otherwise great phone. Unless you want to live on a charger, I'd recommend getting an extended battery or an external charger like the New Trent battery listed in the Bolt Accessories forums. I use the app LTE OnOff to toggle the 3G/4G, but I mostly stay on 3G and I still go through the battery pretty quick when playing games & streaming audio & Video. Putting the phone on standby seems to be the only way to get the 12+ hours out of it. For example, I don't charge it over night. So, I go to bed with the battery at 100% or 90% and wake up with the phone down 5% in 8 hours. Use it for a few hours, doiong web surfing, listening to podcasts, or playing Angry Birds, and the next thing I know, I am at 30%. I do charge my phone probably 2 to 3 times a day, not of out of necessity but out of convenience, so I don't get stuck at a time when I need the phone and I only got 5% left.