I use my iPhone for EVERYTHING! I use it as my GPS, flashlight, radio, for learning games, videos… EVERYTHING! The only problem with that is when we are gone all day and halfway through the day my battery is on 20% I can’t always plug my phone up and my car charger doesn’t work anymore. I think a battery case is an awesome investment for people like me! If you use your phone often, or go places where you can’t or where it isn’t appropriate to charge your phone, grab a battery powered iPhone case! You can find a uNu EXERA POWER SYSTEM Swappable Battery Case and Duo Charging Dock for 66% LESS than its original price (just $39.99).