If there's one annoying thing about having a plus model iPhone, it's not being able to reach half the apps with your thumb when you're using your phone with one hand. And these days, it's practically impossible to go through life without lots of one-handed phone use. How will you hold your coffee, or do all of your other activities that require a free hand if you're already using both for your phone?
Luckily, Apple came up with a pretty good solution for when your thumb can't reach. What you'll need to do is double tap (but don't actually click) the home button to shift all of your apps down a little. This will allow you to reach all of the apps at the top. Reverting back to normal is super easy - just double tap again and it will be like nothing ever happened!