First of all I have to tell you that I love this smartphone.i am using this for about 8 months and I am really happy with this phone.when I brought it comes with android lollipop version.now its march 2016 and I got a marshmallow update.it has few bugs but it is very good.coming to gaming performance.i never face any problem related to gaming like lag or frame drops. I played asphalt 8, subway surfers, unreal fighter and many more games but no problem at all.its battery is also sooo good it easily last a day when charged at 100% . It has a decent 13 mega pixel camera which is good for taking photos.it has double led flashlight which is very useful while taking photos in low light.if you want a good phone with good specifications then go for it.it has a octa core 1.7 processor which is good for multitasking.go for it guys.u will be happy after buying lenovo k3 note