This fone is perfact fone.Price of this fone is verry than any other phone.No other company give future like redmi not 4 in this low price.Doul app, galary hide, file hide, second space, fingerprint it is best function of this mobile.Not a hang problem the 4gb ram is enough.We use what ever we like apps no hang this mobile.Battery back up is best.Display resultok 2.5 curved glaas protec to display, no tension to breack the display. amazing smoothly touch give best experiance. Sound quality is best, design of mobile is best, back side in middle camera, flace, and finger.all over the phone is perfact.