I used redimi2 and now I hav redimi 2 prime its all features same as redimi 2 only diffrence is 2GB RAM and 16GB INTERNAL STORAGE.only this is diffrence between these 2 phone.increased RAM do job well.Multitasking is faster than mi 2 and storage also better now.i got mi 2 prime on MIUI8 its very good.
One of my favrite feature is that you can controll all apps seprately that which app can use what.like you can controll your whatsapp and block it from using net even if net on whatsapp won’t online this is my favorite feature. And it hav inbuilt app locker its also very good feature.overall its same as redimi 2 and diffrence is only of RAM and INTERNAL STORAGE.its very good phone and you should try it : -)