The latter should be enough for most people.
Alongside the three cameras, the Mi 11 Ultra is also characterised by having a tiny rear OLED screen alongside the camera setup, which is actually why the camera bump is the size of most of the width of the phone.
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If you force it to stay at 90Hz, battery life will suffer.
The Xiaomi Mi 11i is shaping to be one of the most affordable Snapdragon 888 devices out there.
The screen's WQHD+ 1440 x 3200 pixels, 515ppi resolution is, in fact, more of a deal-maker.