Thanks mostly to its home button, the iPhone needs a fairly large bezel around its display. But a new iPhone 7 concept gets around this by integrating the home button and Touch ID sensor into the screen itself.
While it’s hard to criticize Apple’s design choices, smaller bezels are something I would like to see from future iPhones — and iPads, for that matter. The iPhone 6 Plus is larger than rival devices with 5.5-inch displays — such as the LG G3 — simply because the bezels surrounding its screen are so big.