The iPhone 6S is the best phone on the planet right now. But in day-to-day use, it's not much different than its predecessor, last year's iPhone 6. In fact, it might be the most mild "S" year yet.

Anyone who owns an iPhone 6S or older, it's time: you probably need to buy a new phone. It's not an emergency, of course. It can wait until the end of your phone contract, or the holidays ...