Lyf f8 is a good phone to exprience the volte network .i am very happy to use this mobile.the 4.5 inch disply quality is very good.latest android 6.0 marshmellow is very very quality of this phone.battery backup is very less bt it is better than other lyf phones .sound quality is like a iphone .display is spontanius .its look is very cute.its design is very similar to lyf flame8 .but rich quality is android marshmellow.it is very is to use .and wifi quality is very good .it is a very good phone to value for money as 4100