Hii I am jitu lenovo k3 not is a smart phone looking is a good very light in weight 150g. This featureis good .the network Gsm, HSPA, LTE and screen size 5.5 inches but this a use it to hang a few years later.But this platform is nice OS: android os : v.5.0.2 ( Lollipop) upgardble 6.0( marshmallow) CPU.Octa_ core 1.7GHz coretax_ A53 Its internal memory is 16gb 2gb RAM the cemera quality is not good lenovo k3note and battery backup 3000 Mha But not good because not long walks and other lenovo k3note system sound quality very good and call system very easyly I think a good lenovo k3note