I have bought lenovo vibe k4 note on 30-1-2016 on a flash sale on amazon.The product arrived in a nice package, and the first day it felt like its worth for 11, 999/- after using it for 15 days I found that phone is getting slow and the battery back up is not much power full as lenovo claimed even though the phone has a 3300 mah battery.After 14 days of use now my phone doesn’t get charged if the phone is switched on, if I need to charge the phone I have to switch it off and connect the charger.
The quality of the phone is very bad that phone started showing problem after 15 days of usage.I wont suggest this product to others.