Xiaomi Mi A2

The Xiaomi Mi A2 (also known as Xiaomi Mi 6X) is a mid-range smartphone co-developed by Xiaomi and Google as part of Android One program.
Specifications.
Hardware.
The phone features a 5.84 inches Full HD+ (1080 x 2160 pixels resolution) 403ppi pixel density display, unimetal body, and Corning Gorilla Glass 5 protection. It is powered by a Qualcomm Snapdragon 660 processor and Adreno 512 GPU.and has a 2.0, Type-C 1.0 reversible connector. It has a dual rear camera (Primary camera is 12MP Sony IMX486 sensor of 1.25μm pixel size and f1.75 aperture and Secondary has 20MP Sony IMX376 sensor of 2.0μm pixel size f1.75 aperture). The front camera is 20MP Sony IMX376 sensor of 2.0μm pixel size with f2.2 aperture. It has a 3010 mAh battery which supports Qualcomm Quick Charge 3.0 (4.0 for India).4
This is the first mid-range Xiaomi smartphone to remove the 3.5mm audio jack and microSD slot.
Software.
The Xiaomi Mi A2 is part of the Android One program where software updates are provided directly from Google. The Mi 6X variant runs on Xiaomi's MIUI.
It is preinstalled with Android 8.1.0 "Oreo" out of the box, and can be upgraded to Android 10. 
Being a part of Android One program, Mi A2 provides a Stock Android experience and UI which is very close to those of Google Pixel UI.
Release.
The Xiaomi Mi A2 is a re-branded Xiaomi Mi 6X phone. The Xiaomi Mi 6X was first released in April 2018, while the A2 was released in July 2018. A stripped-down version of the phone was released on the same month known as Xiaomi Mi A2 Lite.
The Mi A2 Lite, however, did include headphone jack, microSD slot, and a higher battery capacity (4000 mAh). Unlike the regular Mi A2, the Mi A2 Lite is based on Xiaomi's budget Redmi series. A variant of this phone is known as Redmi 6 Pro, which shares the same hardware specification, but runs on MIUI user interface instead of Android One.