Hii friends lyf 4s is the best budget phone released by lyf mobiles its battery backup is very good ( 4000mah) , camera is good , but little hanging problem , if u want to buy 4G phone dont think buy this superb product woth low budget and extrodinary features its design is average , sound quality is very good , earphones alittle bit poor quality, it will take 2 hours for full battery charging, if u wach videos online countinuously 10 hours with its huge battery power , it hangs if u play games so friends I suggest to avoid playing games in this phone.