The dual-SIM (Nano) Realme U1 runs ColorOS 5.2 based on Android 8.1 Oreo, whereas the dual-SIM Xiaomi Redmi Note 6 Pro comes with Android ...
Read more: Realme U1 vs Redmi Note 6 Pro vs Asus ZenFone Max Pro M1: Price, Specifications Compared
Buy this from Amazon