The low end variant Redmi Note 2 was powered by a MediaTek MT6795 Helio X10 Octa-core 2.0 GHz Cortex-A53 prosessor coupled with 2 GB of RAM and 16 GB of internal storage.

The high-end variant Redmi Note 2 Prime, on the other hand, was powered by a MediaTek MT6795 Helio X10 Octa-core 2.2 GHz Cortex-A53 processor coupled with 2 GB of RAM and 32 GB of internal storage.

Xiaomi Redmi Note 2 runs on Android Lollipop 5.0 on top of MIUI 7 and can be upgraded to MIUI 9.

It is also possible to flash a custom ROM[2] with Android 5,[3][4] 6[5], 7,[6] 8[7] or 9, but there is no official support by LineageOS.

[8] Famous problem - fast battery drain.