You might not know about all of these iOS settings, but they let you tweak your experience and get the most out of your iPhone.

We found the best walking apps for everyone (regardless of your goals), from data lovers to guided-workout enthusiasts.

First, it's important to know that some USB ports are designed for charging while others may only support data transfer. Most will provide a measly output of 0.5 to 1 amp -- barely enough to ...