Larger screen sizes featured on modern iPhones have made it difficult to use the phone with a single hand (especially the Plus model which has a 5.5-inch screen). In iOS 10, Apple tackled this problem to some extent with a feature called Reachability that allows you to easily use your iPhone with a single hand. Read all about it here!
I love technology and how it enhances our lives! Just think, without the Apollo moon missions, we might not have calculators! Imagine!!