- I have auto-brightness on and it generally doesn't go above 30-40%. I find it fairly uncomfortable if it goes brighter than that for me personally.
- notifications were trimmed so that I only get alerted for important things like messages and WeChat. I don't need Twitter or Instagram updates personally
- handoff is off on my iPhone since I barely use that
- background app refresh is off for everything aside from Weather
- phone is on silent thanks to Apple Watch (so Bluetooth is always on)
- Don't send diagnostics & usage, limit ad tracking is on
- locations services for most apps are either 'never' or 'while using' except for Weather is on 'always'
- system services are all off except for 'Cell Network Search', 'Find my iPhone' and 'Setting Time Zone'
- aside from iCloud set to Manual, my other 3 email accounts are set to fetch hourly instead of push
- content blockers installed on Safari
My first rundown of my 6S Plus (on 9.0.2) was 12h 32m of usage with 21h 39m standby to get to 1%.
It's currently 12:08 here; phone is at 88% with 1h 50m usage (all on-screen time) with 3h 16m standby. That's amazing considering that I used to get around 1h of on-screen time usage per 10% of battery on my 6 Plus. I know that battery doesn't go down linearly but that's about in line with what I've been getting for the past week or so that I've been using the phone (I was getting about 1h 30m of usage per 10% of battery up until now) and so far I've been estatic about the battery life.