LENOVO A6600 is an excellent phone at this price of 6600.it has a processor of quadcore 1 ghz with an operating system of andriod v6.0 marshmallow.it has an internal storage of 16 gega bytes and a ram of 1 gega bytes.battery in mah 2300 is very decent has good range of backup.the lenovo A6600 comes with a camera of 8 mega pixel with auto focus led flash which is great can capture quality pictures.handsome looking phone.has solid and clear display.sound is average not too bad.overall at the price of 6600 this is a great deal from lenovo.i suggest to every one to buy this phone its not a bad lauched from lenovo.i give 5 stars to this lenovo A6600.thanking you.