Note that this page shows the 9.3.28 update for Redmi 4 Prime, markw only. If you're looking for other updates for this same codename, please check here.
Xiaomi Redmi 4 Prime Android smartphone. Announced Nov 2016. Features 5.0″ display, Snapdragon 625 chipset, 13 MP primary camera, 5 MP front camera, 4100 mAh battery, 32 GB storage, 3 GB RAM.
9.3.28 MIUI/HyperOS firmware/update can be installed via Recovery method