The current trend sweeping the smartphone design field is creating “bezel-less” phones. That allows makers to give consumers what they want (big screens) without going over the limit of what they can handle (literally, what they can hold in their hand).
Here’s a size comparison of flagships past, present and future, compiled by @OnLeaks. Note the iPhone 8 (second from the left). It’s about the size of a Google Pixel or a Huawei P10, but its screen size is unknown – the latest rumors say its screen will cover the whole front of the device.
Phone size comparison (by @OnLeaks)