Go to 'Menu > Settings'
Select 'Profiles settings'
Select 'General'
Select 'SIM1'
Pull-down the list..
Now u can select 'More Ringtones'
how to chnge custum ringtone in lenovo k4 note.. ringtone adding option is missing...
Settings > Audio profiles > select General and * > call alert tone > select ring tone > ok
Go to Settings > Sounds. That is where you can adjust all sound settings on your phone.