I thought I'd do a little experiment on how the Always on Display (AOD) affects battery life and also the phone's ability to deep sleep using Doze. This is not a tightly controlled scientific experiment. I simply charged the phone before I went to bed over 2 nights and unplugged it before I went to sleep. One night I turned AOD on, and the next night I turned AOD off. The next morning I immediately took screen shots in my GSAM app.
NIGHT 1: The first night I left the AOD on. After 7 hours of sleep, my phone used 11% of its battery life. During this time, Doze fired up 3 times for 5 hours and 38 minutes(81% of the time). Pretty good for 7 hours of sleep. Not sure why it turned on 3 different times and not just 1 time.
NIGHT 2: The second night I turned the AOD off. After 6 hours of sleep, my phone used 7% of its battery life. If I extrapolate the battery life to match the 7 hours of the first night, it used 8% of its battery life and Doze came on again 3 times during the night for a total time of 4 hours and 42 minutes (79%, 2% less than the first night).
If I take the delta between the 2 nights (after adjusting for the difference in time), it seems that in my little experiment the AOD only used an additional 3% of battery life (11% less 8%) over 7 hours, or .5% per hour. This seems pretty minimal and is worth it for me personally, since I like having this information handy. Admittedly, live notifications would make it more useful.
Also, it seems that the AOD does not affect whether Doze gets activated or not, which is obviously good. I realize that I would probably need a few more samples to make a 100% conclusion, but based on this simple test, I'm pretty happy with the results. I'll be leaving my AOD on and hopefully Samsung will make it more useful in the future!
NIGHT 1: The first night I left the AOD on. After 7 hours of sleep, my phone used 11% of its battery life. During this time, Doze fired up 3 times for 5 hours and 38 minutes(81% of the time). Pretty good for 7 hours of sleep. Not sure why it turned on 3 different times and not just 1 time.
NIGHT 2: The second night I turned the AOD off. After 6 hours of sleep, my phone used 7% of its battery life. If I extrapolate the battery life to match the 7 hours of the first night, it used 8% of its battery life and Doze came on again 3 times during the night for a total time of 4 hours and 42 minutes (79%, 2% less than the first night).
If I take the delta between the 2 nights (after adjusting for the difference in time), it seems that in my little experiment the AOD only used an additional 3% of battery life (11% less 8%) over 7 hours, or .5% per hour. This seems pretty minimal and is worth it for me personally, since I like having this information handy. Admittedly, live notifications would make it more useful.
Also, it seems that the AOD does not affect whether Doze gets activated or not, which is obviously good. I realize that I would probably need a few more samples to make a 100% conclusion, but based on this simple test, I'm pretty happy with the results. I'll be leaving my AOD on and hopefully Samsung will make it more useful in the future!