HTC Desire 620G: Sound quality is average, dual speakers but work only 1 on call or music.Style & design is good.RAM 1GB thats the problem to install high definition games.2100mAh Li-Polymer Battery is good.I am using this cellphone since last 2 years there is no update of operating system.Since last 2 years I m using android 4.4 kitkat.Network type 3g old generation.Primary camera 8mp average, secondary camera 5mp good.i had bought it in 13k and at present some sites sold it in 7k to 8k.