The Huawei Mate 8 is a very large phone. Unless you're a giant, it can be difficult to use with one hand. Thankfully, Huawei has included a feature called "One-hand UI." When enabled, it shrinks the screen to the left or right side so you can easily reach everything with your thumb. Here's how to do it. Go to Settings > Smart assistance Select One-hand UI Select Mini screen view Switch the toggle on To use One-hand UI, simply swipe across the navigation bar. If you're right handed, swipe from left to right. If you're left handed, swipe from right to left. To exit the One-hand UI, tap the black area outside of the screen.