Update is great overall, phone is faster and smoother. Battery life definitely improved, getting 4 to 4.5 hours of screen time in 18 hours or so. Doze works great overnight when phone is not charging. Losing 4% in 8 hours, could have been better but still big improvement. Not allowing most apps to see location etc is great as well. Only issue is with the power saving. When it is turned on data for messaging apps etc is not working even on WiFi. Can not send messages on whatsapp for example. Chrome works other apps work like I can read news etc but messaging apps do not have access to data. So I turned off the power saving.