When you start running with a heart-rate monitor, the health benefits hit you as quickly as a refreshing splash of cool water. Instead of judging how hard your run was based on unscientific means—how sore your legs feel, how bad your lungs hurt, or how much you’d rather be playing Infinity Blade—a heart-rate monitor keeps you accountable to the cold, hard science of how fast your heart is beating. And that info encourages you to pick up the pace (or slow down) to maximize your beats per minute and meet your health and fitness goals.
The very first time we laid hands on a Verizon iPhone 4, it took us about 0.00000004 seconds to fire up the Settings app and dig into the Personal Hotspot feature. How's that for speed? Can you hear me now, and so on?
The good news: Personal Hotspot works really well, and a monkey with an ice-cream headache could have it set up in seconds.
The bad news: It requires an extra $20/month charge, on top of your (required) voice and data plans, and (optional) texting. And AT&T users don't have it yet.