The phone features a 6.088 inch HD+ (1560 x 720 pixel) resolution, 283ppi Super AMOLED display with a 60 Hz refresh rate,[2] a glass and plastic body, with Corning Gorilla Glass 5 protection on its front as well as its back.

[4][5] The Xiaomi Mi A3 is part of the Android One program, where software updates are provided directly from Google.

An Android 10 update was released on 29 February but rolled back due to bugs.

On 31 December 2020 Xiaomi released Android 11 update, but it bricked[6] every device it was installed on.

Xiaomi fixed the issue within a week, but so far they have not told the reason for the failed update.