Bought k3 note music edition. There is no use Dolby atmos. No improvement in sound quality. Fake 2gb ram. OS itself is occupying 1.5gb. In Samsung j7 OS occupying just 400 mb of ram.so lenovo 2 gb ram equals 1 gb of samsung j7. As the ram is low performance is worst. We can’t open 4 apps at a time. I writing this out my frustration. Please don’t buy lenovo product. Cheap is always cheap