Just received mine from the Telstra day deal and been using for a few days. Anyone else having atrocious battery? Dropping to 10% at 4pm will light use.
Disclaimer - I do have all the bells and whistles on (120hz etc). But I thought the 4000mah battery would last a bit longer. Will the battery optimiser make any difference? It's still working out which apps to sleep.
Top 5 - Reddit (6.7%), pocketcasts (5.2%) streaming through Bluetooth, Gmail (3.3%), messenger (3%), and chrome (2.5%)
I think bluetooth may be a drainer. I stream spotify to wireless headphones and definitely notice more battery drain when doing this or to another bluetooth speaker. Lucky I have fast charge for notr 10+
Yeah that's fine . Like mine says netflix 28% . So if anything was draining it should be on top 3 or 4 on the list.
Please do what sudeep has mentioned below. If it does not work on last resort backup using smart things on pc or Mac and factory reset and restore only contacts , pictures , videos. Anything except apps .
https://www.samsung.com/au/support/mobile-devices/backup-wit…
Go to Settings and look at the battery consumption. It'll tell you what's draining the most battery.
Also, go to software updates to make sure you have the phone updated to the latest firmware version.
Updated to latest firmware. See above reply for consumption
Maybe there is still stuff updating in the background?
How is your reception? Having poor reception drains a surprising amount of power.
As a few people have mentioned, the battery consumption setting should give you a good idea of whats using up your battery
Reception at moderate to good most of the time and it's on the wifi network. I just pressed optimise now so let's see how this goes.
Even if you are on a wifi network, your phone will still try and search for a better cell tower signal if it is weak
You could try cycling the battery a few times (drain completely -> charge to 100 -> drain to 0) which was suggested when I had issues with bad battery life on a new at the time S9.
NO, absolutely do not do this.
This was a think in the 1990's, not now.
Draining 100 > 0 is incredibly stressful for Lithium Ion batteries.
You're better off capping the charge to 80% and only going to 100 when you'll need it to last a long time.
That's bullshit advice. You don't know what you're talking about. While you don't want to fully charge and discharge all the time, doing a full cycle 100%-0% helps calibrate the BMS and gives a more accurate percentage on the screen. You can safely fully charge and discharge every month or so without significant damage to your battery.
Ok Boomer, I guess you know better than
Apple:
https://support.apple.com/en-au/HT210512
https://www.cnbc.com/2019/06/12/apple-ios-13-will-improve-ba…
Sony:
https://www.sony-asia.com/electronics/support/articles/00251…
https://forum.xda-developers.com/t/a-battery-care-trick-to-a…
Wired:
https://www.wired.co.uk/article/how-to-improve-battery-life-…
Strangely enough, batteries are under the most strain when they're fully charged or completely empty … So really, if you were super-keen on keeping your battery living as long as possible, you should keep its charge between 20 and 80 per cent.
Yes, discharging to 0 and then charging to 100% will recalibrate the BMS, but it will also wear the battery out. It's like doing a nozzle clean on an inkjet printer. Necessary sometimes, but you don't want to do it every day. Given it's a new phone, this isn't likely to be the problem.
Check out how much I've worn my battery out charging to 100% earlier in August, vs 80% more recently:
https://imgur.com/a/XY2a4zQ
https://imgur.com/a/5IUreQ7
OP is better off using an app like Accubattery or even the built-in Android battery settings app before randomly trying out solutions like that.
@idonotknowwhy: Oh, I'm a boomer because I called you on your misinformation. Do you even know what Boomer means?
Strangely, somehow your post ends up agreeing with mine, despite your protests. Is this peak ignorance, your way of admitting you were wrong or just illustrating your terrible comprehension?
Oh, I'm a boomer
Because your "drain to 0 charge to 100%" applies to the batteries in analogue mobiles from the 1990's.
Is this peak ignorance, your way of admitting you were wrong or just illustrating your terrible comprehension
no u
@idonotknowwhy: While it's true that lithium batteries are under most stress at 0% and 100%, keep in mind that the manufacturers ensure this never happens. When your battery gauge reads 0%, the battery is not actually at 0%, there is still some juice left. Just like when it reads 100%, it's not actually fully charged. The manufacturers put in a buffer to ensure your battery doesn't die prematurely.
It's completely safe and fine to fully charge and discharge your battery. Keeping charge between 20 and 80% may have a very small benefit long term, but because phone batteries are constantly being charged and discharged, there wouldn't be much benefit. If you were going to store a device with a lithium battery for any period of time, though, you'd definitely want to ensure that the battery was at around 50%.
This is informative not bullshit advice.
Lithium batteries hate to be fully discharged even if it is necessary to do so to calibrate the BMS.
This doesn't mean you should never fully discharge the battery, as there may be cases where you need to, but it is certainly something to avoid.
How about you read the full post?
@[Deactivated]: Oh I did. But I disagree with most of what you said.
Lithion ion batteries and modern BMS do not need frequent full cycle calibration. That may be true of NIMH batteries but not so for modern Lithion ion batteries and doing so will cause unnessary stress on the battery.
Most BMS do not charge a battery to 100% of its real capacity. Each manufacturer/device/BMS will use slightly different % which balances reliability with capacity, it's not something the end user should try to optimise, it's THE JOB of the BMS. It's the main purpose of the BMS.
Likewise is true for the lower end of the charge, 0% is not really 0%, its a level that the BMS thinks is safe (with know tradeoffs) for the battery.
I have similarly disappointing battery life with my Xperia 1iii but not as bad as yours.
I'm at 30% by 8pm with moderate use.
Give Accubattery a try to find out what's causing the drain.
Always On Display and 120hz use more power. I keep 120hz on because I can never go back to 60hz.
Just downloaded thanks
Stop making the op downloading third party apps (probably yours) which Samsung has this feature built in.
I hate Accubattery, but I highly doubt this guy created it.
whats difference between 120hz and 60hz?
it's the refresh rate of the screen. a (normal) 60hz screen is refreshing 60 times per second. A 120hz screen is refreshing 120 times per second. Higher hz makes for a smoother experience but potentially uses more power.
oh i see thanks
Nope, great battery life very similar to my S21+ i just sold.
I have an S20 FE, and most days around 50% by 6pm.
I turned off a lot of background usage for app's. Maybe do the same.
How did you install your apps? If you did smart switch or restored from a backup, if recommend doing a factory reset and installing your apps manually. It often causes battery drain issues.
Can anyone else confirm this?
I installed my apps via smart switch. I'm finding the s21 battery to be draining quite a bit.
It's an Android thing. Doing a fresh install is always a better option. It's fine to restore SMS messages, contacts etc from a backup, but installing apps manually is the way to go.
I'll try this. Thanks!
Battery seems to be a lot better after a fresh install. Thank you!
is installing apps manually mean like going to the play store on the gmail account and installing the apps from there on the new phone?
Did it through smart switch. That's interesting.
the AI is still learning your usage pattern, got the phone for my gf 2 weeks ago, started first week with just around 3-4 SoT, now shes getting 6 SOt or more
Is there way to see what the AI has decided in the settings?
no, it simply learns what you like you use at what time and adjusts the software side or things, cpu clocks and such accordingly.
Don't know what you're getting downvoted. This is correct, the adaptive battery takes time to learn your habits. Battery life should improve in a few days. But installing apps fresh is still a better idea.
what is SOt?
edit : oh, screen on time
I was having similar issues too.
Factory reset everything.
Switch off onedrive backup (I take lots of photos/videos), only backup when charging once a week. This behaviour gave me around 1 hour more battery than usual day.
Disable/uninstall unwanted applications.
Deep sleep apps that is not used frequently to avoid background activities.
Try to switch of mobile data where reception is trash.
I use 120 Hz, turn off NFC, turn off mobile datawhen at home and use Bixby routine to automatically switch to power saver, turn on NFC, turn off wifi when I am outside
For S21 battery life maximization, check this out https://www.reddit.com/r/galaxys21/comments/lqfdhd
That's a great resource thanks
I have the S21 and it is perfectly normal, you can read for yourself in the undress of reviews on it. It is only 4000ma battery at the end of the day, you also say you have all features turned on like i did when new so i quickly changes a lot of settings and now have full day battery. If possible replace it with the S21 Ultra as that is a proper battery for the processor in these phones, which i didn't see any one mention. As an example the A11 is to a 3 cylinder as the S21 is to a V12, you can't? Expect great fuel economy from both and usage may vary.
Had the same problem at the start. Bought from Vodafone. Manager said it was a recognised issue, but would improve over time. After a couple of weeks it did improve, but it's still not as good as my old Galaxy. At least it's very fast to recharge.
I believe it may be the 5G network.
Unless you need super download speed I suggest turning that off as well perhaps.
At this time, the 5G networks are only used for data connections and are not yet capable of carrying phone calls and messages. Your phone will need to maintain a connection to the 3G or LTE network in addition to the 5G network so that phone calls, text messages, and data will be delivered consistently.
https://www.samsung.com/us/support/troubleshooting/TSG012014….
Thanks for the hostility.
This is a very hypocritical comment…
Can these Blitzwolf QC3 chargers be used to fast charge the S21? And is it safe to use them?
https://files.ozbargain.com.au/upload/159813/91111/blitzwolf…
Or should I just buy the official PS? If so where is the best (cheapest!) place to get?
15w will fast charge, 25w will super fast charge.
I think in order to super fast charge you need to do it with a USB-C to USB-C cable with PD compatibility.
Thanks might just buy another charger 🔋👍
Battery optimiser will make 20% or less difference depending what you select in the options. For example if you select limit apps and home screens . It can make a difference.
What does battery usage sections tells you regarding the most use app ? Maybe that can indicate why it's going down fast.