Help [OFFICIAL] Battery performance

I always carry a powerbank. They are cheap that you can have one in the car, at the office and on your person.

Battery lasts well into the evening for me and i have it on high performance, an HD infinity animated wallpaper, AOD, download / upload stats on the home screen that show me the DL/UL speed (consumes energy), and a bunch of other mischief.

I use this device a lot.

Phone has been off power since a little after 4AM pacific time. This screen shot was just snapped at 1331 hours (1:31 PM PACIFIC)

No that’s not right.

You have a rogue app keeping the phone from going to sleep.

Get an app in thre ap store that shows “Wakelocks”.

More info on wakelocks - https://developer.android.com/reference/android/os/PowerManager.WakeLock.html

Alex71268 said:

I am getting a 35% battery drain overnight on idle? That's definitely not right is it. The battery usage has been 9% device idle 8% android system 7% screen and so on the first being the biggest users. How can 7% screen drain occur on idle overnight?? Anyone?

Click to expand...

This is weird. Android 8 limits what can run in the background. If nothing is obviously showing ...could very well be a system bug.

When you first noticed this issue, do you remember changing anything on your phone or setting something new up? Maybe this was happening since you got it?

There is no way anyone can tell you how your phones charge will last because everyone uses their phones differently.


You dont mention how often you are on wifi, how often you are on cellular.

Also when on cellular, if the signal weak where the phone has to output more power?

Do you flip between wifi and cellular often? Etc etc etc.

The battery in the note8 is a couple ticks less in capacity than last years note, so not fair to test against that.

This phone has more ram, better screen, faster cpu.. those things consume battery.

The note 8 i use is in maximum performance mode. I have animated HD infinity wallpaper, super brighter screen, i check WhatsApp all day long, text all day long, keep the screen on all day long.

I took the phone off charger this morning at 4:05 am pacific time .

Here’s a photo of my battery stats. Currently its 11:54am pacific standard time. Ive had the note8 since launch of the T-Mobile first run units.

Stock non rooted tmobile variant. Some bloatware running in the background..

if you are wanting to save battery and not charge overnight, then yes. the phone will use cellular (which is just as bad if you want to save power) unless you have it turned off...

Jim,

first off I have a tmobile variant. locked, stock and barrel.

its not possible for anyone over the internet to diagnose your phone to find out if you have a faulty device or not.

everyone uses their phone differently than everyone else.

i know with the iphone debacle recently, ive seen threads across the internet from people wondering if their "insert device name" manufacturer is slowing down their phone because of this or that reason..

what people can do is share ideas on things to try.

here are things to be aware of:

using wifi /keeping that radio on will use battery.
using cellular data-making phone calls-sending MMS messages will all use battery. if you are in a fringe cellular area, expect more battery cost
live wallapers
AOD usage
using high perfomance mode
screen brightness
rogue app running amok in the background/not shutting down
selfies
video
capturing video
optical image stabilizer on the lenses


and your usage patterns throughout the day

all of these and more will determine how much battery you use in a typical day.

example, I run HD infinity wallpapers that change randomly (these take us a MAJOR battery cost), high performance mode, keep screen on often, I have 10 email addresses with my own email server in "push" mode so the phone is constantly pinging the internet, screen brightness is really high, I have a lot of apps moved to SD card (takes some battery cost because the phone has to go back and forth between external and internal storage). I also use the phone with a samsung VR camera for some things I do on the job that I stream (2-3 days a week).

my phone is on a pad overnight. i take it off around 4am pacific time. when i get home around 2:40pm pacific, I have on average 37-40% battery remaining. I use the phone A LOT!

that's my typical day. of course my day is vastly different from your day.

if you feel you should be getting better battery performance, you should absolutely reach out to samsung and get with their support team. the phone is under a warranty.

samsung will determine if the phone should be replaced, based on some online things they will ask you. at some point they may ask for it to be shipped to a repair facility so they can look at it. if they find fault, they will send you a replacement, refurbished model.

be aware, that if they do send a replacement, it may be worse than your original. you can search the web on horror stories with that.