The OnePlus 7 Pro is one of a few Android phones to support a display refresh rate of 90Hz. While this makes for a buttery smooth scrolling experience, using the 90Hz mode also drains the battery much faster than the regular 60Hz rate that most phones have. The 7 Pro does have a dynamic, content-aware switcher built-in, but if you'd like to have more control, the recently released Auto90 app might be for you. It allows you to set preferred display modes on a per-app basis, though the setup is fairly complicated.

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