yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
Can we port stock camera to LOS? Unofficially, of course.

BTW, besides BT calling problem and camera and maybe too strong vibration, this ROM is perfect? :D

---------- Post added at 05:22 PM ---------- Previous post was at 05:18 PM ----------

What is this?

https://review.lineageos.org/#/c/162950/
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] rodeoslide:
NFC not working

Thanks for this great Lineage Release! I know you`r working hard to release a stable version but so far it is also my time which i use to test your stuff...

And I am frustated with the current ROM besides the camera image quality and noisy ringtones issues (as well which marked falsely as "working" in the intro thread) and some non working apps...

NFC is not working correctly... it randomly detects a tag but not as often as it should. All other ROMs behave different to my opinion and all of my tested NFC Tags which worked perfectly before. The Swipedown Menu Entry to enable/disable NFC is also not working as well.

Can anyone else confirm this and file as a bug? I`m on the latest version 7.1.2 (official) so... how to fix it for reading NFC-Tags properly?

Thanks for your time testing...
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
Your first post on XDA and you're already endearing yourself with the Devs...You are Flashing a Rom that's in the Development Thread - This means that you can't expect everything to be working perfectly... Referring to something in the Rom as "crap" is not appropriate.

LineageOS has just merged to 7.1.2 and the Devs are working hard to resolve any issues - Appreciation for what they do on their own time and for free is the best way to proceed ;)
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
has anyone successfully managed to instal stock camera on this? :D

---------- Post added at 04:21 PM ---------- Previous post was at 04:13 PM ----------

@Fevax, what's in store for hero platform next? :D is better camera still on the way??
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
Not likely - Stock TW Camera would require TW Framework & Proprietary bits and pieces...
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Erv2006:
This rom will be perfect if someone manages to put the stock camera , sadly i think is impossible....
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] :
I don't understand why all you guys don't understand that we will never have stock tw camera...
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
hi there do you know the exactly files invovled?

---------- Post added at 07:50 PM ---------- Previous post was at 07:26 PM ----------

this video says call quality is very bad and battery life not very good, is it still true?

and voice recording too low

https://www.youtube.com/watch?v=7qqilyFnu6o

someone said vibration too strong too?

camera i'll use Footej (https://play.google.com/store/apps/details?id=com.footej.camera&hl=en)
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
Proprietary means just that! Samsung would probably contact their Lawyers ;)

Instead of watching videos and listening to "someone said" - Make a Nandroid of your current Rom and Flash this one and you be the judge...
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] zzxyzyx:
hi,

so i'm still on 20170423-unofficial and was wondering how often i should update. do i pick the newest unofficial or official build? do i even have to upgrade when everything is working fine? :)
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Iruwen:
Not really, unless there's an important security issue (ok, that may be daily, Android is broken as f...)

I usually upgrade every two weeks, or when there's an interesting change. You can't switch between official and unofficial without wiping, so I'm sticking with unofficial, although I miss the delta updates of CyanDelta/Lineage Downloader.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] TacoLoco:
Look at shots like this:

https://www.youtube.com/watch?v=LwBAFMi-PP0

You will know, why some users desperately long for the stock cam.. I love LineageOS and this ROM and everything Fevax and all the other devs do for us, but I think about going back to stock, just because of the camera.. So every (dirty and perhaps illegal) hack of the orgiginal camera into this ROM is appreciated (sorry, I'm not a dev, so I have no idea if this is somehow possible)..

Best regards

Edit:

Is Multiboot possible with S7? So we could simply boot official firmware if we want to take photos or videos in HQ?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] cgirerd:
Hi everyone,

- I know that there are many users pushing for the stock camera. Devs are doing an excellent job, I would like to thank them very much for what they are doing. Just a quick question. I am not particularly pushing to have stock camera even if that would be nice. But [MENTION=4351374]shaggyskunk[/MENTION] said that it is because it is proprietary, which means that it would be illegal. But isn't that the same for Google apps? And it is possible to install it thanks to projects such as Open Gapps. Is there something I don't understand?

- Yes [MENTION=712148]TacoLoco[/MENTION], it is possible to do a dualboot on the s7, I did it with SpermanRom and LineageOS and it works perfectly. The app I used is Dual Boot Patcher. There are tutorials on the internet on how to use it, or I can give you some links as well.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shakad:
Yet dual boot works great
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] atamig:
take camera zoom fx. It works.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] hrvojemaric:
Just tried it and it produces worse pictures than Lineage stock camera. HTC camera still has the best results.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] viulian:
The feature is there on the Lineage OS ...0502 for my (ready for warranty for the 2nd time) LG G4 and is working.

On S7 I can find it in the Settings Search, and if I click on it, I get redirected to the Other Sounds and I see it hiding (is the last one). For now I will just disable it :)
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] TacoLoco:
Now I have Dualboot working, SuperStockROM 2.7 (based on Stock) on the System Partition and LineageOS 14.1 on the Data Partition.. Works great.. If I want HQ Camera I simply switch the ROM.. :cool::good:
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
how does it compare to footej?

https://play.google.com/store/apps/details?id=com.footej.camera&hl=en

however, it would be best if some of us can extract the necessary files just enough for stock camera to work on LOS. of course it shouldn't be in official, in order to to avoid legal trouble.

Keeping my finger crossed.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] atamig:
I have installed the officiel image from 28.03.17 and test the LOS camera. Video and pictures works....
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Iruwen:
I once purchased Camera ZOOM FX Premium and I'm getting the same results as described here:

https://xdaforums.com/showpost.php?p=71917654&postcount=1092

It works, but it doesn't work well. Compare:

https://xdaforums.com/showpost.php?p=71926779&postcount=1099
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] rainer777:
Hi,

anyone having problems with whatsapp?

It seems the messages aren't syncing. I often have a delayed delivey and receive. And yes, also if I'm having good wlan or LTE.

R.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Iruwen:
There still seem to be minor issues after WhatsApp's total blackout two days ago.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
What's the best setting in footej as close to stock camera? [emoji2]
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] quantuser:
First of all I would like to say thank you to all developers for the great work! I am using CM/LOS since Galaxy S2 and I love it!

Unfortunately the LOS camera app for the S7 is not the best. Some users here mentioned that the HTC camera app is the best for the S7 with LOS. Can someone tell me where I can get this HTC cam app without the Google Playstore? This would be great ;)
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Iruwen:
http://www.apkmirror.com/apk/htc-corporation/htc-camera-new/
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] quantuser:
Thanks for the link Iruwen!

I just wiped my S7 completely and installed official lineage-14.1-20170502-nightly-herolte-signed.zip. After installing some apps (htc cam, f-droid, orbot and so on), most of them I have also on my S5, I suddenly noticed a very low battery status. At beginning of the installation of the rom I nearly had 50 % and in the end just 6 %, which I thought was a little bit too much drain. So I plugged in the S7 with the original Samsung charger to charge it and it says, that it will take approx. 9 hours until 100%.

Screenshot from settings/battery:

http: //img4.imagetitan.com/img.php?image=15_screenshot_20170506-014836.png

Does anybody has an explanation for this?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
Between footej and HTC, which one you recommend?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] MK73DS:
Do I need to wipe everything when I update the ROM ?

Thank's

Sorry if the question was already answered, I don't have the time to read all the 123 pages ^^
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] atamig:
No....you can wipe the cache and dalvik
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] BlackNebulaR:
Is it any possible to use the Samsung Camera app with LineageOS? I really like the app, but also would really like to install LineageOS.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] MrCookie105:
No
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
It's highly recommended that people search the Thread before asking a question that has been asked and answered countless times before ;)
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] BlackNebulaR:
Oh sorry. I have read it at the beginning of the thread and wanted to read an updated answer.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] pieceofphil:
It will never ever be possible until hell freezes.

Or Samsung unbounds camera from the framework and releases the blobs and stuff for the camera. So better wait for the first thing to happen as Samsung never changes.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Nosepull:
Quality seems the same to me, so I use HTC as Footej only offers basic functionality without purchase. However, HTC seems a bit crash prone, especially with HDR.

I would like to use OpenCamera, but it seems to get something wrong, edges are blurred and the picture is distorted. On stock ROM OpenCamera worked as long as Camera2-API was turned off.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] quantuser:
After a wipe/factory reset it seems ok now :cool:

edit:

Now I observed a new problem: Today I used osmand for car navigation and for a distance of 70 km and 50 minutes driving 30 % battery was used. I think this is too much, because the S5 with LOS lasts a lot longer. The S7 also got very hot, so maybe the CPU is doing more work than needed?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] truevision:
Someone can confirm input voice on stock keyboard doesn't works from several builds ?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
Can I enable 4K video in footej?

---------- Post added at 04:25 PM ---------- Previous post was at 04:05 PM ----------

How to enable volte?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] :
Are you able to read the thread or use the search? So do it!
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] jazzdglass:
international carrier icons

Can someone help make a flashable Odin zip or flashfire I can use to change my status bar signal icons to international Verizon s7 icons? I mean the E, H, LTE. I'm rooted and have file Explorer. Also on nougat. I have Tmobile and sprint s7 I 2wnt this on.thsnks
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Waza_Be:
New build is up... Downloading...

Edit: working fine. You can flash.

Edit2: assistant is crashing

Edit3: working after reboot. Everything is fine
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
finally installed last build 2/May with stock opengapps

- "music" app crash upon first boot, but no problem afterwards

- formatting sd card as internal result is a small error, gone after 2nd time retry, storage size reporting is now wrong though, the total size is internal storage + sd card x 2

- phone app isn't registered properly, have to goto setting -> default apps or calling won't work

- voice volume seems a bit low

- battery drain seems a bit fast, but will wait 1~2 days until it settle down before conclusion

- not tested: bluetooth

- stock camera is crap, installed footej (or htc camera) instead

- side note: opengapps stock include both pixel launcher and google now launcher, after you chose any one you cannot remove/disable the other one

edit: battery issue, maybe not alone https://www.reddit.com/r/LineageOS/comments/6a80en/battery_drain_and_over_heating_on_s7/ [MENTION=3654774]Fevax[/MENTION]

---------- Post added at 03:26 AM ---------- Previous post was at 03:20 AM ----------

i tried but google skills too bad, can you give some hints? thx!
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Waza_Be:
Battery is the best I ever seen on LOS.

Way worst than any other ROM but first time I go below 1 percent per hour since I installed it
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
your build is? official? unofficial? date?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Waza_Be:
We are in the official thread, that's why I didn't specified...

And my post from yesterday start with "new build is up, downloading" :D
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
OK thx! So official build 20170509. :D
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] dylanneve1:
Why does battery drop issue occur on all AOSP ROMs and is it possible it will be fixed in the future?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
What battery drop issue?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Waza_Be:
:good:
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] dylanneve1:
When you charge to 100%, reboot and it drops 80-90%
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
i don't have this issue currently on 20170502 official. could be your hardware problem?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] dylanneve1:
Doesn't happen on any TW based ROMs.

PS. I'm actually on AOSP Extended but I was using lineage and I had this issue also.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
TW = TouchWiz = Stock?

Could be Samsung has some built-in mechanism to mask this problem, but without further info just "battery drop" issue and others not seeing same problem there is not much the dev can do
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
It's more likely that it's related to the Nougat update - Google S7 battery issues and you'll see a number of links referring to the the S7 battery issues.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
yes but they're a few months old, seem not relevant.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
It may be a few months old - However nothing has changed since then - There haven't been any further updates to Nougat by Samsung since battery issues began to be reported. Everything from batteries not charging properly to what a previous poster commented about the battery ‰ drop after a reboot as well as precipitous drain... It doesn't seem to affect all devices all of the time - But I've experienced these issues randomly on my S7.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
maybe you should take your s7 to service centre then. because im quite sure the devs can do nothing about this without further data and info.

this is more of a hardware problem. battery "percentage" reporting is always a tricky sport, if you know how they measure, you'll know.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
Like I said - it's a random occurrence - If it was a hardware issue it would be a consistent issue and it's not. There are several days where there's no inconsistencies with the battery and charging - others have reported that the battery will charge to a certain percentage and then stay at that percentage - But a reboot fixes it - Sometimes with a battle at 100% and a reboot does drop the battery charge down to 80 or 90% - But sometimes the loss in the state of the battery charge % is only a 2 or 3% Odin to Stock and this behavior isn't present. It's long been known that devices with Exynos chips don't get the full support from Samsung because Exynos is Samsung - This goes back to the Note 2 in North American devices.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
and you expect the dev will somehow find out the root cause of all these things and fix it? :D

it takes samsung months to figure out what went wrong with note 7

not trying to discourage you but be reliastic.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
Ah - NO - Where did you get to the idea that I was expecting any Dev on any AOSP / LineageOS based Rom to fix it?

Samsung is notorious for not releasing the Exynos kernel information - And it's been like that for years - I've done a fair amount of testing for Devs on different devices and Roms - I know that Development for Qualcomm devices is much more straightforward... But as of this time - Qualcomm devices are all shipping with locked bootloaders... So that's a non starter.

Who knows - Perhaps Samsung's Nougat update tweaked the Battery Charging in light of the Note 7's issues (pure speculation on my part)....
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
anyway, it being a random occurance doesn't mean it isn't a hardware issue, and battery dropping by a large amount after reboot is often a aging battery from my experience. it's just that battery capacity is an analog issue that doesn't always translate well into digital figures. but of course it's also can be a software issue but like you said, unless samsung gives more info it's particularly impossible for AOSP/LOS devs to solve it.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
The phone is just over a month old - I hardly think for a second that it's an "aging" battery issue lol.

I've got a 2 1/2 year old Note 4 an almost 4 year old Note 3, an almost 5 year old Note 2 and a 6 year old Skyrocket.. Not one of them has similar battery behavior... And we do know that Samsung is being very cautious regarding updates particularly with respect to batteries. I'm very confident that it's not a hardware issue ;)
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
You may have used it for over a month but can you be sure when the battery was made? [emoji12]
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
Really??
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] dylanneve1:
I understand, thanks :)
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] rkreklam:
If the camera problem is resolved, I will install it immediately. I'm waiting, I'm following you constantly.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
just use htc camera or footej.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Kholargol:
Is there way to install Samsung SDK on a lineageROM? I would like to give a try to LineageOS but I could not live with this fantastic app : https://play.google.com/store/apps/details?id=com.marekv1.fingertouch
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
You could always try Multi-Action Home Button from the Store. It's very doubtful that you called install the Samsung SDK on a LineageOS or AOSP Rom.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Kholargol:
Tried it. It's not as convenient as using home bouton as a sensitive one but it's still a good and useful app! I will use it on my tab which is on LineageOS. Thanks.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Bongsi:
For me battery is most matters. Iam expecting at least to equal stock battery performance.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
Official build 0509 is very good
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Bongsi:
Really!. I will have to try this. Thanks ?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
found two problems:

- Camera: even though Footej works well, the camera libraries are still bad. e.g. when I use Whatsapp to take photos, the quality is bad

- SD card formatted as internal, has made wrong reportnig size
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] shaggyskunk:
What size sd card do you have... 128 Gig? What you're seeing is correct - I think that you have to take into account the storage space that is not available for your use.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
No it's not correct, how come I have total >200GB storage when the internal is only 32GB. And it says "System" has used >90GB......

BTW, is this help camera? Some new proprietary files...

https://review.lineageos.org/#/c/169588/
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Bongsi:
Just installed the latest build. I cant enabled the system ui tuner. Is it only me or we cant enable in the settings with this build?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] mr-br:
LOS Updates prompted me about the 09-May nightly but after downloading and then selecting Install, it said "Unable to boot into recovery".

So I had to go into TWRP and manually navigate to /data/data/org.lineageos.updater/app_updates to install it.

Any ideas why it can't do it from the updater?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Mayex:
How is camera and battery compared to stock ROM?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] pieceofphil:
Search this thread for battery and camera and you'll know
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Colday96:
Its worse than stock but a lot better than 3 months ago. There is still room for optimization and improvements so i guess this rom will be ready in 1-2 months
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] LaCruz:
Is VOLTE avaible on LOS 14.1?
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] optionalmgrr.la:
one thing I still could find the answer is 4K video recording

---------- Post added at 07:10 AM ---------- Previous post was at 06:22 AM ----------

Outstanding can be better issues imo

Built in camera (partial solve by footej or HTC camera)

Storage size wrong with sd card format as internal

4k video option missing

Volte vowifi not coming

Otherwise this rom is running pretty fine imo
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Scholler:
Is there any information when the BT calling issue will be fixed?

When you connect to e.g. your car audio system and make a call, after you have left the car and BT is no longer in use the phone does not work properly. At any call then you can hear the opposite site but not vice-versa.

Thank you.

btw: I am using inofficial build from May 12th
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] DavisNT:
Could anybody post samples of camera used in other apps (e.g. WhatsApp)?

I would like to understand what "bad quality means"...

Also can anybody post a screenshot of GPS Status when the fix is obtained? This app shows what satellites actually are used to obtain the fix, so this is a good test of whether GLONASS and BDS are working.
[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] MK73DS:
Fingerprint scanner is always on, even though the screen is off. Isn't it a source of battery drain ?