I've used MIUI, cm13 and cm14.1 on Mi5.
On Cyanogenmod, the fingerprint sensor is always on. Will this shorten the life of the sensor?
Bottom line , no it will not shorten the life of the sensor. You will buy another device anyway in about 2-4 years...
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I feel that the fingerprint sensor is slower now after the update. Earlier it was 'Instant' but now there is a delay, although not significant, but it's there. Anyone who feels the same??
It is slower and it must be slower, since in Nougat device is in doze mode most of the time and it takes time to wake from doze mode. But you are saving a lot of battery.
Michalko5896 said:
It is slower and it must be slower, since in Nougat device is in doze mode most of the time and it takes time to wake from doze mode. But you are saving a lot of battery.
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Ohhhh, I didn't know that. Thanks!
I'll see how the battery performs.
After unboxing and charging my new Note 9 I immediately rooted the device and flashed a custom FW.
Can a person on stock ROM please clarify these questions for me:
1) Is it stock behaviour that the fingerprint scanner on the back is always on while the screen is off?
2) Does this feature impact battery life?
3) If it's stock behaviour how do I disable this? I tried changing the secure setting "biometrics_auto_wakeup_enabled" from 1 to 0 without any effect. But maybe there is another switch? I don't know.
Thanks for any help!
1) If I remember right, I have not changed any settings related to the scanner being enabled/disabled while screen is off, i.e. it would be at "default". I haven't even looked for such. For me, it does unlock directly even when display is off. (Edit: fingerprint seems to unlock from any state before homescreen, except in the lockscreen note writing mode.)
2) I haven't measured battery life yet, let alone looked for changing the feature's behavior for another measurement, so I can not really tell. However, standby battery life seems to be ok. I'm using the phone with very varying levels still, so hard to estimate well, but I'd estimate from the early daily %-drops that standby time is at least 4-5 days. So, I guess the feature doesn't drain the battery that much.
Just a small follow-up, as I finally got a decently "normal" (for me) day and a half with the phone, only one short call, text message, maybe 10 gmails received (but mostly read on PC), a bit of "usage" with screen on time probably less than 15 minutes in total.
Seems I could get about 7.5 days of standby time.
Screen settings don't matter much in this scenario (as the display is off most of the time). Other significant settings are: wifi off, BT off, 4G LTE always there, GPS always available, NFC always ready, fingerprint sensor always waiting for finger, the only extra apps that could be battery hogs are Flowdock and Steam apps (both seem to behave nicely, Flowdock was nasty on my previous phone). Using the LED cover. (Quite the "default" setup with a relatively small number of installed apps or changed settings.)
In a way, that result is good. But on the other hand, with similar setup (minus Flowdock and LED cover, fingerprint sensor only works when display on, but add an extra email account on samsung email app with polling checks), my Galaxy S5 was getting about 6-7 days standby time, too, and that with its original battery (and the phone was bought pretty much the day when it came available here). Note 9 having much larger battery, and presumably better SoC (at least they always claim lower battery drain in idle from each CPU after CPU generation), better Android version... kind of "meh" result from Note 9. However, I did tighten some settings on that S5, like reduced email check frequency and such, which I have not looked for on Note 9 yet. And possibly will not look for, that 7+ days is good enough for me.
Does the fingerprint sensor drain battery?
* If fingerprint sensor is off, that means the digitizer is off, right?
* If Always On Display is off but fingerprint sensor is enabled, that means the *entire* digitizer is on (as opposed to just the fingerprint part of the screen), right? I disabled AOD and tapped anywhere on the screen and it will detect the touch and show the fingerprint sensor location.
* If fingerprint sensor is on, then whether or not you use AOD will not have an effect on draining your battery, since the digitizer/screen is on anyway, right?
Therefore, the only way to save battery with regards to fingerprint sensor, AOD, and screen is to disable both fingerprint sensor and AOD. If you enable either fingerprint sensor or AOD, then you can use the other without worrying about draining your battery because you're already draining your battery using one of these features.
By draining your battery, I simply mean demanding more battery life. My concern is saving battery life with regards to these features and I don't particularly need AOD or fingerprint, although it would be nice.
Interesting. Gonna try this myself
Let's face it. The finger print sensor so far is garbage. And I never use AOD
That's going to save a tiny mount of battery. Ar eyou really having such bad batteyr issues that you need to find an extra few minutes of battery?
You'll also have to turn off "double tap to wake" if you want to do what you've suggested.
Also, the fingerprint sensor is completely independant of the touchscreen/digitiser. It doesn't use the digitiser. It's not a "touch" sensor. It's an ultrasonic (sound) sensor.
Oh man. You guys are really grasping for ways to improve battery life. But discarding biometrics shouldn't be amongst your options. I use the USS (ultra sonic scanner) as my main way to unlock, and it doesn't detract from my battery life. Honestly, this is like using grayscale to save battery.
Hi Everyone!
Up until this week I've been Xiaomi.eu on my phone. Recently, I've been having buggy problems so I decided to flash plain old Pixel Experience. Everything is super smooth; I love stock Android; but Ambient Display is MURDERING my battery life - like 5-10% an hour when the phone is idle.
Turning Ambient Display off has completely solved the problem (battery life is back to normal) which is unfortunate because I really like this feature. AOD on Miui was completely fine and never gave me any issues.
Any idea what the problem might be?
Do other AOSP based roms have this issue?
Thanks!
I've tried Pixel Experience, Arrow os, Project elixir, pixel os, ppui and cherish os.
I can confirm that this problem persist in every single one of them. Maybe its Android 12 issue.
When AOD is on device never goes into deep sleep causing huge idle drain.
Hello guys
anybody can help me please , I am using Cr-droid 8.10 since week ago it's really excellent ROM but I am facing heavy battery drain during the night on average 20% is lost every night the phone is not going into deep sleep although it tried to disable all apps that might wake up also I used nap time still I don't know what's the problem or how I can fix it any suggestion because I am thinking to revert back to miui
attached my battery usage and naptime log
i know... but crdroid is not good... i tried all roms for sweet.. very similar but more stable is project elixir 12.. very better (first days i had 1 reboot, after few days never happen)
Johnton said:
... Cr-droid 8.10 .... 20% is lost every night... how I can fix it ....
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Have you already tried this?
With mine RN10Pro this did help a lot (from < 5h to >9h SOT )
I run this workaround now for 2 months
Install Better Battery Stats from XDA, take proper logs as explained in the thread and post it there for analysis. Wakelocks might be an issue.
I went back to MIUI guys I think no way around it all custom roms for this phone either fast but with some annoying bugs or drain battery
Johnton said:
I went back to MIUI guys I think no way around it all custom roms for this phone either fast but with some annoying bugs or drain battery
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Idle drain in (stock, not rooted) MIUI in general is pretty good, around 0.3-0.4%/h with always on 4G data but after a few days it almost always doesn't enter Deep Sleep which increases drain to 2%/h which isn't horrendous at least. Restarting the device is the only fix.
BBS works with ADB permissions so I might give that a try.
For now I have given up on my plan to rid my father's RN10 Pro of stupid MIUI.
is suggest change rom... crdroid is not eccellent, has many bugs (aod blink, touch issue, deep sleep not work).. very very similar (but much better) project elixir 12.1 + last sleepy kernel. no drain, deep sleep working, miui camera included, no bugs, i use this from 2 weeks and work perfect (and i tried ALL existing rom for this device XD )
aleMarvel said:
is suggest change rom... crdroid is not eccellent, has many bugs (aod blink, touch issue, deep sleep not work).. very very similar (but much better) project elixir 12.1 + last sleepy kernel. no drain, deep sleep working, miui camera included, no bugs, i use this from 2 weeks and work perfect (and i tried ALL existing rom for this device XD )
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Isn't project elixir 12.1 discontinued? What about 13?
Ilikekittens246 said:
Isn't project elixir 12.1 discontinued? What about 13?
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yes 12.1 discontinued but work very well but attention... only this version... future version of project elixir 13 contains payed feature.. i suggest to not flash that rom.. if you want full working a13 rom, there isn't for now.. i found bugs in all i have tried.. for now best a13 is lineage unofficial and pe+.. but not perfect (for example in lineage mi camera tinted, in pe+ missing for all)