K4 note battery and overheating problems are easily solved with 3 steps:
1. Go to Settings>Power manager>Background app management>click "Restrict All"
2. Install GREENIFY (Oasis Feng), go to Settings then check "Alternative Screen mode", analyze then greenify all the apps that can be greenified. (Note Android Marshmallow has a greenify clone called "doze" but the current K4 note Marshmallow is full of bugs so do not update yet!)
3. Install CPU Cooler Master by PICOO Design and follow installation directions. This will solve overheating problems.
4. Install AMPERE by Braintapp. If you use a 2 ampere (2000 ma) or higher charger and a good cable, you should read between 1800 to 2000 ma. If less than this, replace your cable. The K4 Note can give you 7 hours talk time with just 30 minutes of charging.
A VINOD, 19 Oct 2016please tell me jio sim is working on this phone with calling alsoIm using K4 with Jio sim. You can only use data with Jio sim. Calling not supported as K4 doesnt has VoLTE. You can use Jio voice or simply whatsapp for calling.
Awesome device. Im totally satisfied using K4 Note.
Only one thing is not good which is its camera.
viju, 15 Oct 2016my airtel 3G data not working when i am using jio sim simultaneity
Only one sim will have 4g/3g at a time.
U have to switch to Airtel to get Airtel 3g. But as jio only has 4g network, it won't br
Nil, 16 Oct 2016Bro plz dont buy k4 note its a third class phoneGive reason
i m buy the oppo a37 but this is the totally fake mobile but now i used the lenovo k4 note and this is so much better then oppo mobile.!!
this mobile is best in this range and it's have brilliant camera quality this
phone is ten time better then redmi note 3
it is the best phone in this range in the world..
i m using k4 note past 7 month it's never hanging or hitting problem and the camera of this phone is better then redmi note 3...
it is the best phone
Mobile is best. but no volte pls update it.k5 note has ota update it supports volte. I'm waiting for update for k4 note