I bought this lumia 830 about a year ago . dropped 7-8 times still no defects . using is withot screenguards too. screen is gorrila glass so no fear not got any of screatch while it sleeps from my hand and dropped to ground. really a durable and awseome phone.
windows os becomes too good after windows 10 and haveing working smoothly on this lumia 830. I would sugest use recent builds and updates for good experince. lumia 830 is one of the must buy product for purchase maybe currntly you will get it in stores in 12000 only have a try. stunning design it it most beautiful windows phone ever seen. recomended to all. must buy:)