I have using lenovo k6 power 4 gb verient and I can say this is awesome phone
it has 4 gb of ram and 32 gb of internal storage
performance is great
camera quality is also good
I am this device since 2 months and this device has no issue
it comes with qualcomm snapdragon 430 octa core processor it means very good performance
when I purchase the device os was android 6.0 marshmallow and android 7.0 Nougat is comes in this device
and lenovo confirm android 8.0 oreo will come soon in this device .
overall performance in this device is fantastic.
so I recommend to all kindly purchase this device.