Xiaomi is a well known company in chines market. And i’m using this phone since 6 mounths and so. So far I have not noticed any lages. Xiaomi also provides regural updates for there phone, so there is less chances of slowing down of phone.If talk about specs of this phone it comes with a 4000+ mah battery, hd screen, 13 mp rear camera, 5mp frount camera, full metalic body. There is only a draw back with this phone when you do heavy gaming this phone heats up due to its meralic body. If you are a moderate user you can go for this product. Just value for money. go for it.