The Asus zenfone Max zc550kl is one of the cheapest mobile in the market which have 5000 MAH battery. The battery of this phone standbys till one week for standard talking and when using internet and other app it standbys three days.It have 2GB of ram and 16GB internal memory for RS.9000 variant and 3GB ram and 32GB of internal memory for RS. 10000 variant. It have 5.5 inch high definition display and front camera is of 5 mega Pixar and 13 mega Pixar of main camera. I was using these mobile since one month and it is very good .