I have used this phone and its working very nice it didnt hangs a lot like other micromax devices however battery life is not up to the mark its below average. But since it is a device from google I get the latest android updates .currently my phone is working on marshmallow and it is rumnin great. One of the major con is the internal memory because of that you cant install more apps it always shows memory space shortage. But in gaming this phone is a champ it runs majority of games even gta also but dont expect great from graphics. : )