I like the new interface. It's much more fine. I just don't like that samsung keep reminding me that i am using a dual sim phone by showing me from which sim I called in phone dialer
you can simply wait for bug fixing update by samsung or can downgrade to marshmallow by flashing official firmware from sammobile.com according to your phone model and country through odin..But before that checkout some forums like xda about downgrading and reviews of user regarding that
Thank you for sharing your concern. We would like to inform you that Samsung never recommend or provide downgrading of OS after update. You can only update your device using smart switch or FOTA.
