Summary: I previously owned an HTC Incredible 2 and was able to run my walking app for a 10-mile hike with plenty of battery life remaining. With the Mini, the phone is HOT before I reach 8 miles and battery usage is in the red (10% remaining). Actually, the phone is often very HOT to the touch. I've contacted Verizon customer service often about the phone getting hot or completely dying, but they have no solution. The battery is part of the phone, so can't be replaced.