yashsingh1/xdaforums huggingface dataset:
[Xperia Z4/Z3+ General] cerobles1:
Ok, so it seems that using power saving mode or stamina mode or whatever it's called does make a difference on battery life. On my Galaxy s5, although it has a Snapdragon 801, it is still a quadcore SoC, and turning off two of the cores makes a huge difference on the battery life.

So my point is if you would to turn off the A57 cores completely off I wonder how much battery would increase. Or even if you do not mind a bit of lag, 'cause I don't, maybe even go a step further and turn off one or two of the A53. I found an app on the playstore that allows me to turn off cores on my 801. I would like for someone to give it a shot and see if it makes a difference. It did not work on the Galaxy S6 and that's why I am still looking for a new phone.

Having a non-removable battery is definitely a deal breaker for me. But if the phone has the ability to go at least a good 16 hours without a charge, then that wouldn't be such a bad deal. That means if you unplug at 0500 you could still go all the way to 2100 before you would be forced to plug in. Just throwing my two cents out there for you guys. I wished someone would comeout with a phone as good as the Z3+ with the features of the Samsung S5. 5 to 5.3 in screen, water resistant, removable battery, micro sd card and a screen that's comparable to a Super AMOLED. LG G4's screen is very good but with a locked bootloader it kills the ohone for me.

Alright, sorry for the rant. Let me know if someone wants to try out the app I was talking about. And by the way, im not the developer of the app. Im just an user.
[Xperia Z4/Z3+ General] EnderIII:
What was this app called? Does it require root?

With Stamina mode it breaks 16 easy.

I am currently at 41% battery, and my phone has been on for 24 hours. This is with light-moderate use.

I have yet to drain this phone to 0 yet, so I will see how long it can go.

I have the low battery stuff kicking in at 20%, so it should go even longer.
[Xperia Z4/Z3+ General] robstunner:
It didn't seem like extended stamina mode that lowered performance made any difference for me.
[Xperia Z4/Z3+ General] ciprianmp:
I forgot to drain to 0 on first use. Is that still recommended/required with the new devices? Is it too late to do it after a few charges? (one week old here)

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[Xperia Z4/Z3+ General] robstunner:
I don't think it matters, that's a highly debated subject though so you'll hear both ways.
[Xperia Z4/Z3+ General] tomfuegue:
Is better than Z3 or not?.
[Xperia Z4/Z3+ General] ciprianmp:
Cannot be! Battery capacity is smaller and processor stronger...

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[Xperia Z4/Z3+ General] deecept:
With roughly a weeks use as experience;

Out of the box, with OTA updates: Absolutely not. Not even close.

Clean wiped, and truly starting fresh: If not better, at least on par with the Z3.

However, they excel in their own rights.. so it's a little complicated :)

When it all comes down to it, I would -not- recommend a Z3 user to upgrade. There's simply no good enough reason to.

But, a Z2 user would greatly benefit from an upgrade, as long as they don't rely on 2-day battery (the battery on the Z2 was insanely long lived on lollipop 5.0).
[Xperia Z4/Z3+ General] Mwinggg:
im considering z3+ instead of z3 becoz of 32gb rom and capless usb port, do u think both improvements outweigh the higher price, lower battery life, overheating issue?
[Xperia Z4/Z3+ General] addicted1900:
Does anyone else got the problem, that the wifi seems to suck out the battery? This morning my device went from 100% to 95% in nearly an hour without any wakelocks ...

For now i switched the Wifi off and it seems to be working. I lost in 2 hours 1% which seems quite okay. Any ideas ?
[Xperia Z4/Z3+ General] ciprianmp:
I am not good at debugging, but because my battery goes out really quick and I have my wifi always on, switching very often between 3 networks (2G, 5g and one extender), sometimes just staying on Data, I suspect this could be a reason. If there is any fix to it, I would be more than happy to read into too.

PS: I unplugged 3 hours ago and I only have 77% left. That is not even close to my brand new Z3+ phone specifications...

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[Xperia Z4/Z3+ General] schecter7:
Check out my attached screenshots. I have been using mine very lightly over last 26 hours. Power consumption by 'Wi-Fi' over 5GHz band seems quite reasonable. But I'm not quite happy about the usage by '', 'Google App', & 'Google Play Services' I guess I have to switch to 'Battery Saving' location mode even though the screenshot says 'low battery use' for those two.
[Xperia Z4/Z3+ General] addicted1900:
[MENTION=4203465]schecter7[/MENTION]

I think your stats are quite okay. Would be interesting to know whats your Screen-on-Time is. And maybe you can provide a Screenshot of the google App and google Services. Maybe they are keeping the device awake.

I personally switched off the Wifi at Standby. With the result that i am gettting the radio active bug ... This Kinda sucks :D I assigned my Z3+ a static IP, may this be the a possible reason for the higher consumption ?
[Xperia Z4/Z3+ General] schecter7:
[MENTION=4336026]addicted1900[/MENTION]

Attached. Mine is set to DHCP. Maybe give it a shot? I didn't turn off Wifi at standby as you could tell. Btw, I also left 'scanning always available' unchecked under advanced wifi settings.
[Xperia Z4/Z3+ General] addicted1900:
Yeah, i think i will test DHCP tomorrow. Hopefully this fixes my problem.

It seems, that you got the "mobile radio active bug" too. Your mobile radio was held awake by the google app for 37 minutes. I think this causes the Consumption. This would mean that your location settings are fine. Try to switch mobile data off when you're connected to Wifi. Should fix the problem as far as i read.

For reference https://code.google.com/p/android/issues/detail?id=165558
[Xperia Z4/Z3+ General] schecter7:
Oh, I forgot that I was on LTE for couple hours yesterday. Maybe that partially explains the mobile radio active part - still it seems too high to me as I wasn't doing much on LTE. Thanks for the tip.

Btw, I was initially getting 3.5 hrs of SoT on regular days with 9-6pm on LTE & WiFi afterwards. I noticed abnormally high 'mobile radio active' numbers from some apps. The fix for me was to 'close all apps' occasionally. It bumped my SoT to 4.5 hours. There's certainly a problem with background apps sucking power through mobile modems.
[Xperia Z4/Z3+ General] addicted1900:
FYI, DHCP didn't changed anything. With WiFi on I still lose 2-3 % of battery an hour. With mobile data I'm at 0,6%. Stamina mode on.

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[Xperia Z4/Z3+ General] schecter7:
[MENTION=4336026]addicted1900[/MENTION] You're using 2.5GHz or 5GHz wifi band? In the worst case, just do a 'repair' through PC companion. I know it sounds strange, but it works most of the times - especially after OTAs. It'll also increase 'available memory' a bit.
[Xperia Z4/Z3+ General] addicted1900:
I'm using 2,5GhZ wifi.

I have the phone since last Thursday. As i got it, I did the "repair" immediately after I installed the OTA-Update. I also done a factory Reset. I think i'll wait a bit since i can live for now with that battery. But I hope to see some improvements in coming updates.
[Xperia Z4/Z3+ General] deecept:
My Z3+ lasts a full day with moderate use. All radios on, BT, WiFi, LTE, everything. Brightness to 50% adaptive.. I do have Stamina turned on, though. Weird we get so different results!
[Xperia Z4/Z3+ General] cAase:
Second charge, I guess the battery has yet to reach its full potential. I'm satisfied though after all the opinions on battery life. It's crazy though how much percentage the display stands for. I came from Samsung s5 and it always had the display at 30% at the most. Anyways, WiFi on all the time, no stamina mode, brightness on manual around 60%. Pretty much light usage with alot of Internet browsing, tapatalk, fb and some music.

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[Xperia Z4/Z3+ General] schecter7:
Ah, I see. Sorry - no need to 'repair' again. I thought your issue popped up suddenly. I think the phone is too new. It really takes 1/2 weeks for things to settle down.
[Xperia Z4/Z3+ General] addicted1900:
Well I don't know, when I am seeing 5h sot with 50% remaining I am getting the feeling that something is going realty wrong here in my case. I will test the upcoming night the standby in flight mode. With all modems off, there shouldn't be much power consumption. If there is, I will do another factory reset. If this isn't fixing the problems I think I'll contact customer care.

Or might a missing calibration of the battery could be the culprit?

Anyway here are some screens.

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€: put the Phone in Airplane Mode - 4 hours and didn't lost any power according to Android. So no faulty device. I am testing now Airplane + Wifi on. I'll keep you updated :D
[Xperia Z4/Z3+ General] :
You realise that battery is better on wifi than on mobile data. My Samsung Galaxy S6 (known for bad battery) gets 6-8 hours on Wifi.
[Xperia Z4/Z3+ General] AhsanU:
I'm not sure how you manage that but staying on WiFi is universally linked with worse battery life. There is a reason why there's an option to stay on mobile data with WiFi on when the screen is off, it's so you can save battery life. Every experience I've had with a smart phone has reenforced this notion as well.
[Xperia Z4/Z3+ General] an3k:
My experience with the Z2 was that it lasted much longer when on LTE (3 / 5 strength indicator) with data transfer on but WiFi turned off than with WiFi turned on and network set to GSM and data transfer turned off.

Newer devices support 40 MHz wide WiFi channels to double the data rate (eg. 300 Mbps than just 150 Mbps) but that costs much energy. And if additionally MIMO (Multiple Input, Multiple Output = at least doubles the data rate) is available/enabled you have additional energy cost. And if you last but not least have 5 GHz WiFi you have the worst combination regarding energy savings.
[Xperia Z4/Z3+ General] schecter7:
Here's what happens when I don't close background apps on LTE . The numbers just don't add up. Google seriously needs to take it easy :(

Btw, if you close chrome with multiple tabs through 'close all apps' & reopen later, it opens up with all those tabs. But looks like it reloads those tabs as you hop around. So I think 'close all' actually kills chrome.
[Xperia Z4/Z3+ General] JasonJoel:
No.... Not true at all. There are many phones that get better battery life on wifi than mobile. It greatly depends on cell signal strength.

Wifi pretty much always uses less power than a poor cell signal, because the radio power has to be cranked up so high.
[Xperia Z4/Z3+ General] schecter7:
Not sure - He probably meant by turning off wifi while you're not using it (being on 4G) could save some power. Otherwise, it doesn't make sense. I used both wifi & 4G exclusively whole day at home. The difference in SoT (higher on wifi) was almost as big as 2 hours.
[Xperia Z4/Z3+ General] xWOLFvDOWNx:
Thanks for the advise! I was really worried cause my phone lost about 50%(!) during the night. Now I have switched from my 5 GHz MIMO band to the 2,4 GHz one and voilà, it's losing about 2% overnight. :cool::good:
[Xperia Z4/Z3+ General] addicted1900:
BTW: Now my batterylife finally got better. I turned Mimo and 40Mhz off and now Wifi is behaving completely normal. Around 0,5% drain an hour with synch of 2 Gmail Accounts. If i am not using mobile data I can get around 4-5h SoT with one Day Standby. Thats okay for me.

But the mobile-radio-active bug is still there. Hopefully Google/Sony will fix it.
[Xperia Z4/Z3+ General] ciprianmp:
Good to hear. Now what is Mimo? Mimo Baby Watch app? And what did you mean by turning 40MHz off? :)

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[Xperia Z4/Z3+ General] addicted1900:
These are router settings. Read the post of an3k. ;)

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[Xperia Z4/Z3+ General] ciprianmp:
Right, I read it the day before but I forgot about it... That's why I always quote. :)

Thanks.

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[Xperia Z4/Z3+ General] hasona:
My Z3+ has been acting really weird battery-wise, my screen is at auto brightness with slider all the way to the left but after 2 hours of screen time the battery is at 57%!! Thats pretty bad by my standards a week ago and horrible compared with others in here especially the one with 5h - 50%, any solution??
[Xperia Z4/Z3+ General] addicted1900:
What's your idle time? It depends on that an your usage

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[Xperia Z4/Z3+ General] deecept:
Tried a full wipe yet? A lot of users had overheating and battery issues. All gone after full wipe in Sony Bridge for Mac or companion :)
[Xperia Z4/Z3+ General] schecter7:
Who's getting 5h-50%? You mean someone's is getting 10h of SoT? What was your SoT before the issue came up for this identical case -> "after 2 hours of screen time the battery is at 57%!!"
[Xperia Z4/Z3+ General] cAase:
My post on page 4.

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[Xperia Z4/Z3+ General] an3k:
That actually happened to me. After I did a complete reset (including wiping data) using the phones feature I got less overheating and much better batter life. I got a SoT of over 7 hours! See https://plus.google.com/+BenHumpert/posts/hJubUP68ZHr
[Xperia Z4/Z3+ General] hasona:
I had 7-8 hours 2 weeks ago now barely cross 5 hours before it dies and I still am using the same apps and features

I will definitely try a full wipe like everyone suggested and see what happens because I know the battery held up to - regardless of how I used it - at least 6 hours before.
[Xperia Z4/Z3+ General] addicted1900:
Did you checked your mobile radio activity? ==> https://code.google.com/p/android/issues/detail?id=165558
[Xperia Z4/Z3+ General] Masssy:
Stamina mode makes literally no difference at all for me. It does either nothing or worsens battery life. Currently getting about 16 hours with very moderate use. Should maybe try a full reset? Any way of doing so without losing apps and data?
[Xperia Z4/Z3+ General] hasona:
Wait, so even if Wi-Fi is on mobile data is still on in the background?? If so then I think we found a culprit

Not right now as far as I know
[Xperia Z4/Z3+ General] addicted1900:
Exactly. If you are using mobile data normally the radio would be active for fulfilling the task of transmit the needed data and then goes to idle. Under LP there's this bug. If you were on mobile data and after that are connecting to Wifi, the mobile radio is nevertheless active.

Look at your battery Stats. What helped me was manually deactivating mobile Data if I am connected to Wifi and close all Apps as schecter7 wrote earlier in this Thread. I
[Xperia Z4/Z3+ General] hasona:
Wow never knew this bug existed, I always presumed that Android turned it off system-wide when connected via Wi-Fi - even on LP which clearly is not the case.

Will report back in a few days and see what it says
[Xperia Z4/Z3+ General] schecter7:
Wow! That's awesome. How'd you manage to get that? Mobile data always off, 2.5GHz Wifi, Brightness (manual or adaptive? slider 0 regardless - I think) ? On your screenshot, shouldn't there be other apps like chrome/browser, FB, etc if you're using those over that 5 hour period? Are you also closing apps or leaving them open in background?
[Xperia Z4/Z3+ General] cAase:
Mobile data always on. Though I was pretty much only on Wifi that day. No idea what ghz I use on Wifi. Default I guess. Yeah fb, chrome etc should be on the list. I have no idea why they aren't. I use greenify for some apps, the rest of them I leave untouched, meaning I don't force close any. I use manual brightness, around 60-70%.

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[Xperia Z4/Z3+ General] schecter7:
[MENTION=3769534]cAase[/MENTION] Thanks! That's really good SoT despite your aggressive settings. I'll have to check out greenify & manual brightness. Thanks!
[Xperia Z4/Z3+ General] hasona:
Okay I have now done a reset and looked further into the phone's heat and battery issue and I have to say that there has to be some kind of memory leak or bloat that ruins the experience before you do a reset. My phone is freaking cold and has no heat problems at all, chrome used to burn the **** out of the CPU.

The cpu tempratures were always around 55-60 C when on Chrome now they are at 45 C....

The battery ran through 7 hours yesterday which is a big improvement so yeah doing a full reset is probably gonna fix a lot of problems.
[Xperia Z4/Z3+ General] an3k:
I approve this message. I had problems with battery life and (over)heating. Then an app crashed and made the whole phone unusable. I did a reset (directly on the phone) and since then everything is fine. SoT of 7 hours and stuff like that :)
[Xperia Z4/Z3+ General] schecter7:
About this annoying 'mobile radio active' bug - Chrome uses mobile radio for at least 6/7 minutes even if you minimize it & lock screen for >7 minutes. If you unlock next time but don't use chrome, the number stays the same. If you use it & lock screen, that's another 6/7 minutes . So all these add up quite fast. Same thing applies to play store & few other apps. So on 4G, the best thing is to close all apps before medium/long idles. I hope they will fix this soon.
[Xperia Z4/Z3+ General] hasona:
Its a pretty damn ugly bug that Google seems to not care about which is really awkward. After I got the reply from someone earlier here about the bug I looked it up and its confusing me to how Google isnt giving a single sh*t about it
[Xperia Z4/Z3+ General] Masssy:
This was the results I got today, what do you guys think? Is it what I should expect or worse? It seems apps keep the radio on for hours despite time using CPU is really low and the SoT is really nothing to brag about (varying brightness, very low when indoors and close to max while outdoors).

The other day these apps definitely did not represent ~10% but I'm not sure the battery time was better anyway. And look at last picture, Spotify using 16% battery with 39 min CPU, 44 min keep awake and THREE HOURS RADIO ACTIVE?!?!?!. Although I think 44 minutes of listening is actually pretty accurate.

I have not used WiFI but I'm guessing it would be immensely stupid to count any usage to these apps when they are not even used? Would make more sense if Spotify actually used 44 min and then maybe Android OS the rest.
[Xperia Z4/Z3+ General] schecter7:
[MENTION=4372910]Masssy[/MENTION], The bug is quite annoying. For now, just 'close all apps' on 4G before locking screen. I think we all should also sign this petition lol -> https://www.change.org/p/google-inc-fix-the-mobile-radio-active-bug-on-lollipop

Btw, I heard that 5.1 for Z2 still has this bug, so I didn't update. I'll probably downgrade it to KK. But we don't have that option on Z3+ lol
[Xperia Z4/Z3+ General] addicted1900:
Some stats from yesterday. I had to use the mobile data cause I was traveling 9 hours in total with the train. I toggled mobile data off and on every time when I load a website. Quite annoying but resulted in good Batterylife life.

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[Xperia Z4/Z3+ General] jamminen:
my z3+ battery

I'd like to know how many resets do i have to do to be one of you lucky ones. My problem isn't solved, I've never gotten 7 hours SoT, best is like half of it. Now i'm charging, i used it until 35% left and SoT was 2hrs 37min. Overnight it was in airplane mode. Is there some gimmick to do when resetting? I have tried so many things, different browsers (same radio bug still), even uninstalled/disabled everything that's got to do something with google and removed my google account. To no avail. I use wifi at home and 3g at work. For a couple of days i stopped shutting down apps before locking screen and noticed that battery consumption is just the same, so seems shutting them down didn't help. Previous phone was Z and i had to revert it back to kitkat, it was bloody horrible with lollipop -.-

Edit: So you who get 7 hrs SoT, do you reach it just like that or is it possible without any additional means? What would be reasonable to get, using only stamina mode and keeping sync off, basic browsing, facebook etc? I don't really watch videos or listen to music daily very much.
[Xperia Z4/Z3+ General] hasona:
Its weird I know, but my time has been great since my reset, sync is always on, music daily its just I don't know the different version out in the wild depending on region is messing things up. Some get awful battery life while some get perfect ones and I don't think its the battery at fault. Some customizations are just unoptimized.

Here is my stats from this morning with brightness at 40-50% without auto
[Xperia Z4/Z3+ General] jamminen:
That is just wrong... Maybe it really is issue with my country or operator or some feature that is not supported here or with my operator... I can not believe I would do something so wrong or different. The screen is never the biggest in consumption in my stats, like it should be, usually it is chrome by far. Or any browser I tried.
[Xperia Z4/Z3+ General] addicted1900:
I bet it's the mobile radio active bug :D look how long your mobile radio was active at the details of chrome.

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[Xperia Z4/Z3+ General] jamminen:
Yes it is, mobile radio is always active for hours... And nothing to do about it. Seems like Google has made its forum about that bug read -only, due to maintenance ;D tried just now write there... They got sick of complaints
[Xperia Z4/Z3+ General] hasona:
Its a BS bug and I hope they have it fixed in Android M or else Google is turning into a joke, because 5.1.1 definitely doesnt fix it
[Xperia Z4/Z3+ General] cAase:
Anyone else having crazy amounts of alarms fired by fast dormancy? I didn't have nearly as much alarms fired on any previous phone.

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[Xperia Z4/Z3+ General] Dathrex:
my z3+ battery lasts for 3/4 of a day with heavy usage
[Xperia Z4/Z3+ General] Masssy:
Lived in a smaller city during the summer and the mobile radio active thingy seemed to affect me much more there than now living in the middle of one of the countries biggest cities. Could it maybe be that the network somehow has some play in the problems. Of course it is probably still a critical bug but maybe (or I'm just imagining things) it has to do with (on some level) the network.

I mean compare this battery vs the one I posted earlier in the thread.
[Xperia Z4/Z3+ General] hasona:
My battery took a giant hit today thanks to me forgetting mobile data on. Its a serious bug that needs a fix ASAP by Google. Like for real its horrendous how Chrome Beta, Facebook has mobile data active for 3 hours while also eating my battery
[Xperia Z4/Z3+ General] jamminen:
At least you have screen as the biggest consumption, I always have chrome, Facebook second. But I need mobile data.
[Xperia Z4/Z3+ General] hasona:
I hope it at least is fixed in Android M because damn Lollipop has been the biggest pile of buggy **** ever since 2.1(not only Sony phones)
[Xperia Z4/Z3+ General] ciprianmp:
With the just released version 28.0.A.8.251 (still 5.0.2 though), the Data/WiFi bug seems to have been fixed, as the 4G icon disappears as soon as you connect to wifi. For me, that means no more background hangings on Data mobile.

Of course, I just installed the update so more testing will be needed, but that is my first impresion.

This update is currently being rolled out through PC companion only and it has positive feedback so far.

Going to test the camera/heat issue now.

Enjoy the new version. :)

PS: While I was writing this, my batery went from 91% to 92% (if I'm not dreaming lol), which is weird as it sounds, but it might mean that the phone is more efficiently using the juice?

LE: my speakers sound has improved a lot too!!!

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