I think the biggest downside of the advances in cell phone technology is the loss of Snake, possibly the greatest time-wasting game in history. We don't want to play a crappy interactive version of the latest Michael Bay movie. We want Snake back. And nothing more.
Youtuber Spiritplumber devised a cheap and relatively-simple way to extend your cell phone's battery life. Recording video on smart phones is notorious for draining your juice and he claims this workaround can last a few hours with just a couple of bucks. Or you can go the less ugly but more expensive route and just pick up one of these guys.