hi everyone,just bought a new k3 note , everything seems good, except few things such as

1. battery life drain very fast even dun use much..
2. very slow charging(charge at night, wake up morning still hasnt full yet)
3. unable to use touch focus while recording video mode. (and the autofocus pretty much slow also)

Hopefully this is something related to the ROM pre installed by the dealer which is s422_160315_ROW. Would be glad for any suggestion if there are actually better ROM even an older ROM i dun care, as long as it can fix all issues mentioned. Thanks.

I just checked with ampere app, turned out using a 3rd party charger just gave me 500mA hence the slow charging, while using the lenovo ori charger give me 1700ma. seems the usb pin connection is different which somehow makes the 3rd party charger(with 2.1A 5V spec) was simply seen as a usb port by the phone.

Thanks for the reply, any suggestion for the best custom ROM?