[Samsung Galaxy S9+ Questions & Answers] Rose4uKY:
My estimate battery life says 12 hours and it's not showing my recent. Just got phone a little over a week ago. I usually put phone on wireless charger when I go to bed and then get up around 10am or 10:30 and leave for work around 1:30 I was topping it off to get back to a 100 which I don't know is good to do but yesterday I didn't do that and I left work around 22%. I usually never have to charge my phone at work anymore I didn't with my Note 8 neither which actually got better with Oreo. I would leave work with 40 or 50%. But someone on another forum said it's good to charge once you get down to 40% which I don't do. But mine isn't showing me my recent stats and just now I accidentally out of habit stuck it on the wireless charger on my desk and took it off real quick so it says 9 sec on charger and is starting over.

But if I go to medium power saver it tells me estimate 15 hours only a little bit more from 12 to 15 so I don't think I need to do that. Unless I was going out all day and needed more battery life and going to be on my phone a lot more. I'm guessing not having to charge my phone all day at work like my Note for me is good. I had just gotten Oreo on my Note and I think it improved battery than a few days later sold it and got the 9 plus. I keep display on WQHD and auto brightness on and 2 minute screen timeout and I use AOD. I was just curious and started reading to see to see if I could improve. I run the optimizer once a day and try to reboot once a day too. How big of a difference is it using FHD over WQHD? Me and my husband used WQHD on our Note and I know the S9 plus was defaulted to FHD but I changed it to WQHD my husband said it's better. I did one night not put it on the wireless charger and wanted to see the standby drain and it was maybe 6 to 8 % on 8 or 9 hours of standby I don't fully remember. My signal isn't the best at work but I have Wifi and I keep location on battery saving mode and I keep blue tooth on I have a Gear S3.

But I'm guessing if I am ok with it and I don't have to charge it at work I am good. I am not the type to turn stuff off just to save battery I like using AOD and my current theme has an animated lock screen. AOD was supposed to let you add a gif but I don't think the latest update gave us that option and when it does it may drain battery more. But I'm guessing I am happy with it. My 7 Edge I always had to charge at work than the Note 8 came out and Sprint said it had something new HPUE (High Performance User Equipment) which improved our signal from the 7 Edge some and my battery life was so much better than the 7 edge. But I see some people getting 16 to 20 hours and I never have gotten that. What is normal for screen on time I guess I'll check phone tonight at 11pm when I get off and no charging am on 93 now.

---------- Post added at 05:20 PM ---------- Previous post was at 05:12 PM ----------

You Get 30 hours after a full charge how?

---------- Post added at 05:55 PM ---------- Previous post was at 05:20 PM ----------

So under Android System allow background activity is best if turned off mine is on. Just wondering mine says 1% right now. I know people are using medium power saving mode I never have and don't think I need too. But I am wondering how much of a difference this will make. I guess I'll check it at the end of the day or after a few hours and see what % it is on. I just wondered if turning it off will mess with any apps I'm not sure what it does.