yashsingh1/xdaforums huggingface dataset:
[Huawei P9 Guides, News, & Discussion] Fleonar:
I am very disappointed by the battery life, coming from a Nexus 5x (which also hasn't got an amazing battery life). I got out with my P9 phone this morning at 6AM, fully charged. It is now 11:40, as I am typing this, and I've got 30% battery left. It won't last a full day. And my screen time is 1h 45m.
[Huawei P9 Guides, News, & Discussion] Grungi:
Hi Fleonar

I suggest that you do a factory reset, it helped in my case.

Settings->Privacy->Backup and Reset->Factory Data Reset.

It worked fine without formating the SDCARD.

Greetings & GoodLuck
[Huawei P9 Guides, News, & Discussion] dedovec:
Hi, Fleonar

Turn off Location, Bluetooth, set brightness to Auto, Power plan to Smart instead of Performance through Phone manager, allow only needed apps to run after the screen is turned off, if you use Facebook's own app, delete it and use browser, if your mobile operator 4G coverage is not good, set it to 3G/2G auto, look at the Phone manager's report for power intensive apps. Install CPU Spy from Play store to see the time the CPU spends in each frequency state... Search the problem. ?
[Huawei P9 Guides, News, & Discussion] Fleonar:
Location is off, although i had to use it for a while, but then i turned it off again. Power plan is set to smart. I've allowed only the apps i need to run when screen is off. I don't use facebook's own app, I open it in the browser. Don't have 4G in my town yet, so only 2G/3G auto... I really don't know what the problem is. Android System usage is ridiculously high. I'll try this CPU spy app, thanks for the reply.
[Huawei P9 Guides, News, & Discussion] dedovec:
You are welcome. If you can't find the reason for battery drain, unfortunately i also have the same suggestion as mentioned above- a factory reset... ?

PS: Hm, if you are disabled some permission of Google services and they try to use it, maybe this is the answer...
[Huawei P9 Guides, News, & Discussion] Fleonar:
I went ahead and did a factory reset. Phone is still charging (stock charger is mind-numbingly slow). WIll see how it performes. in the next few days...
[Huawei P9 Guides, News, & Discussion] dedovec:
Wish you luck and great battery life. ?
[Huawei P9 Guides, News, & Discussion] dedovec:
The same conditions and usage as my previous post. Definitely i will stay with this phone. Until the new Nexus device.
[Huawei P9 Guides, News, & Discussion] Fleonar:
After I did a factory reset, it doesn't seem to have fixed the battery issues. Yesterday I went out at around 9:30AM, took phone off the charger at 100%. I was out for more than 12 hours and I got home at 10:30PM, I had 18% battery left and the screen on time was just under one hour! I had the phone mostly in my pocket, on standby. Even turned the mobile data off at some point because I saw it won't last... The only apps I used were the facebook messenger, viber, chrome, and took 5-6 pictures with the camera. I don't know what to do at this point, except maybe just get a different phone....

As a comparison, my old Z3 Compact lasts over a whole week on standby.
[Huawei P9 Guides, News, & Discussion] dedovec:
What the CPU Spy says? What is the time of deep sleep of the device? If you have a service, that keep the phone awake it will drain the battery. Try GSam Battery Monitor for one discharging cycle and see what eating your battery.

It's not impossible to have a faulty battery out of the box. If you cant resolve the problem, changing the device is a good idea.
[Huawei P9 Guides, News, & Discussion] Kutusov:
That's the last phone you should be comparing the P9 to when it comes to battery life! The Z3 Compact is a beast when it comes to battery life. Take a look under tools ---> Battery life at the chart on GSM Arena. It's a standardized test that might not give you real life values but gives you a comparison between phones. You'll be hard pressed to find nowadays something that has the battery life of that phone or even the regular Z3.
[Huawei P9 Guides, News, & Discussion] Fleonar:
Says deep sleep state is unused :eek:
[Huawei P9 Guides, News, & Discussion] dedovec:
Yes, sir. Look at my screenshot. Your phone doesn't go to deep sleep. If you don't have root to use BetterBatteryStats, as i said before try GSam Battery Monitor to discover the service/ app that keeps your phone awake when you not using it.
[Huawei P9 Guides, News, & Discussion] Kutusov:
I know I'm jumping in the middle of a conversation but is "Deep Sleep" Marshmallow's Doze?
[Huawei P9 Guides, News, & Discussion] Ulver:
Not necessarily. Whenever the screen goes off, the phone should go into a deep sleep which means it's using very minimal processing power.
[Huawei P9 Guides, News, & Discussion] dedovec:
Doze:

"For Doze to kick in, your phone needs to be sitting still with the screen off, and not connected to a charger. That means no moving around and nudging the gyro or other motion sensors, no touching the screen or the buttons and no waving your hand around in front of it if you're using a phone like the new phones from Motorola that have motion detection on the front bezel. Set it down, and leave it alone."

Deep sleep:

"Turns your phone CPU to the lowest clock cycle speed or turning off cores.

It also disables some sensors it figures you might not be using, such as camera, gyro, etc. some of it gets shut off to save power.

When you wake up your phone, re activates the sensors, sending power back to the camera, gyro, magnet, proximity sensor, etc.

This is more or less what deep sleep really is. "Program", to save power, by disableing unused sensors, and clocking CPU way down to minimum."
[Huawei P9 Guides, News, & Discussion] Fleonar:
A little update on my situation with the battery drain:

I went into the phone manager, in the "protected apps" section, and unchecked Viber, Messenger and Chrome, so they don't run when the screen is off. The only app left to run was "com.huawei.android.ntp" , which I don't know what it is. Restarted the phone, just in case...

After this, deep sleep kicked in, and now 80% of the time since last night, it has been in deep sleep mode. I started allowing the apps, one by one, to see if any one prevents it from going into deep sleep.

Now, the weird thing is, I have enabled all the apps that I previously disabled, so the settings are the same as yesterday. But now deep sleep works. I don't know what exactly changed...
[Huawei P9 Guides, News, & Discussion] dedovec:
Nothing new and strange. This is how Android does work- your phone is OK, then decided to make you angry, and in the next moment everything is back to normal. That's the situation with all of my Android devices in the years. [emoji1]
[Huawei P9 Guides, News, & Discussion] Kutusov:
Ah, just like a PC... run into a problem, turn it off, turn it on again, problem solve. Why? Witchcraft! No one knows! :D

BTW, com.huawei.android.ntp is a network protocol so I'm assuming it has something to do with the phone updates.
[Huawei P9 Guides, News, & Discussion] Fleonar:
After I saw that my phone did not use it's deep sleep state, and I did a factory reset, the battery life was better. Still not great, but better than before. Now after about two weeks it decided to stop going into deep sleep again. I have changed no settings and installed no new apps. Seriously, f%#k this phone.
[Huawei P9 Guides, News, & Discussion] :
Not sure if this is going to help people here, but I discovered that Scheduled Power On & Off feature last week.

I don't power the phone down overnight, I just use it to quickly power cycle each night during zero dark thirty, and it has made an improvement to battery life and general. I now regularly get 30 hours with 5h45m screen on time. (Screen set manual @ 50%)
[Huawei P9 Guides, News, & Discussion] iaitoo:
My battery doesn't last a day. And I don't use it much. No games, only check facebook 5-6 times a day and maybe a couple of snapchats and I sometimes use the camera. It uses about 20-30% power idling when I sleep. Old phone (samsung s5 neo) used 5% during that time. Android services, mediaserver and android OS uses almost 40% of the power. Screen and and Cell-Standby(not sure if its named this in English) use 31%. So system services and the OS use 70% of the battery. I wonder how long the battery would last if I was an active user :P
[Huawei P9 Guides, News, & Discussion] Kutusov:
Some people seem have reported that issue... try a factory reset? From what I've seen and read, that's not normal but for some reason happens to a few folks.
[Huawei P9 Guides, News, & Discussion] max650001:
I will try factory reset
[Huawei P9 Guides, News, & Discussion] Kutusov:
Please do report back. I was interested in seeing what OnePlus would come out with but, now that I've seen the 3, I'm still more interested in this one. I'm anticipating a huge bill to pay in a very near future so it's not like I should be getting a new phone but hey, I might go crazy so I still would like to know. :silly:
[Huawei P9 Guides, News, & Discussion] Ulver:
Not too shabby
[Huawei P9 Guides, News, & Discussion] Fleonar:
I've seen several posts of users who get around 7-8 hours of SOT, and I find it very interesting how they did this. I had 100% this morning, now on 78% and my SOT is 22 minutes. Haven't tried using it with screen constatnly on, but it seems like it doesn't matter if the screen is on or not, battery just goes down at the same rate...

The only way to live with this phone is to have a charger at home, at work and in my car....
[Huawei P9 Guides, News, & Discussion] dondavis007:
It sounds like you have a wake lock or something. Check if your cpu/phone ever sleeps. Great sot for me is often when reading a book in low light. Otherwise I normally have around 3 to 4 and 16 hours total.

Skickat från min EVA-L09 via Tapatalk
[Huawei P9 Guides, News, & Discussion] Fleonar:
Oh well, then I guess it's just as good as it gets. When I use the phone, I am always using either wifi or mobile data, or using the camera, and general multitasking, and screen brightness is on auto.

I have installed CPU Spy, and the phone does go into deep sleep when I leave it on the desk.

I have noticed that sometimes, immediately after it's been plugged in for chagring (not every time), It stops going into Deep Sleep. So every time I unplug the phone I restart it, to be sure it won't bug out and not go into deep sleep.... I have failed to see a clear pattern of when this happens.
[Huawei P9 Guides, News, & Discussion] Kutusov:
[MENTION=5065500]Fleonar[/MENTION] this battery life affair just sucks, people with the same phone seem to get completely different results. I was googling your issue and came acorss this review: http://www.techradar.com/reviews/phones/mobile-phones/huawei-p9-1318442/review/6

Now, I've watched and read a ton of other reviews and these findings don't match what I've seen a lot of other people reporting. HTC 10 gets a better battery life with this reviewer but it's awful on many other reviews. Certainly way worst than the S7 with almost all and even the G5 fairs better in some because despite the smaller battery it seems to be very well optimized. I know about the differences in signal in your area argument etc but these results shouldn't vary so much. What was your previous phone and do you reckon it had better or worst battery life?
[Huawei P9 Guides, News, & Discussion] dedovec:
Really? I think all this are games... And i even don't have a book reader installed on my P9...

I was in my office and the display was set to auto brightness.

But yes, you know better than me how i use my devices. ???
[Huawei P9 Guides, News, & Discussion] dondavis007:
We all reach our SOT different ways. There isn't two persons using a phone exactly the same way.

I have three different phones with the same apps and kind of usage and it gives me a pretty good picture.

The P9 is almost where my S7e is, and that's pretty good, but nowhere close to a larger battery as the Mate 8.
[Huawei P9 Guides, News, & Discussion] iaitoo:
Still think it sucks that I can barely make it through a day, and I don't really use the phone that much. And that android with different system stuff takes 70% of the battery.. Got the latest update. The one ending in 36. Hope they come out with a new one soon. Since it seems there is many of us with this issue.
[Huawei P9 Guides, News, & Discussion] Iwholden:
I was having issues with battery life so I under clocked a little, I've been using my phone for about 7 hours with quite moderate use, I'm now about 46% battery. It's excellent. tested a few games and they still work perfectly, not noticed any change at all. I would recommend until an update comes out
[Huawei P9 Guides, News, & Discussion] luiskp:
Im getting around 5 hours of SOT. I love my Phone, now I just want an update for the camera...photos just looks with lot of contrast and missing colors (obviously Im not using the B&W option :p)
[Huawei P9 Guides, News, & Discussion] iaitoo:
Under protected apps, "com.huawei.android.ntp" is listed. What does this do? Is it a system service, or can I unprotect it so that the phone can stop it while screen is off?
[Huawei P9 Guides, News, & Discussion] Iwholden:
My batter has been fantastic since I under clocked it. I've been using it quite a bit for the last 10 hours and I'm still on 50% battery. I don't noticed any apps or games lagging.

If you have root access, I'd give it a go.
[Huawei P9 Guides, News, & Discussion] mickfitz:
Not sure what happened today but the battery isn't happy.

Wth?
[Huawei P9 Guides, News, & Discussion] tommass4:
ok so,bought this phone 3 days ago..battery was very bad,,used to drop 40 % during night time in ultra power saving mode.Wanted to bring it back to the shop.As it was insane..

But here you go after trying out some stuffs found the solution..

TURN OF BACKUP AND YOU WILL BE LAUGHING:) its under advanced settings turned of back up option,and now i just love the phone,it only took 4% in night,and looks very good now...even love it more after yesterdays update once they sorted the icons out.

TURN OFF THE BACKUP AND ENJOY!!!!!
[Huawei P9 Guides, News, & Discussion] dondavis007:
For you that have had the latest firmware a couple of days, interesting if you noticed any difference

Skickat från min EVA-L09 via Tapatalk
[Huawei P9 Guides, News, & Discussion] Kutusov:
That might not be a valid option or even the problem. Maybe because it was a brand new phone, it was still syncing your accounts and app information and updating this and that. It's not unusual for a phone to do that when first fired up or if you flash a new ROM.

Also, what's that backup thing? Is it some sort of Huawei cloud? And wouldn't you be needing it? Or is it the phone's account syncing?

Do try turning it on and see it it improves. It should and doesn't sound like something you would want to keep off...
[Huawei P9 Guides, News, & Discussion] darthkir:
Can you please share how to under clock?

I'm already rooted.

---------- Post added at 03:04 PM ---------- Previous post was at 03:02 PM ----------

Can you please share how to under clock?

I'm already rooted.
[Huawei P9 Guides, News, & Discussion] deraiz12:
Hi, for all peopole have more than 5 hours SOT ,you use Google now ? Sync ? Localisation ?

THX
[Huawei P9 Guides, News, & Discussion] aliensmille:
No Google now and no GPS on
[Huawei P9 Guides, News, & Discussion] Mery Alpes:
I dont have any battery issue.
[Huawei P9 Guides, News, & Discussion] darthkir:
Glad to mention that with normal use (rooted, Apex launcher, wifi always on, browsing, camera, Facebook, WhatsApp, Telegram) I managed to consistently get around a little over 7 hours of SoT.

However, whenever I enabled systemless Xposed + GB, SoT will be reduced to just over 5 hours.
[Huawei P9 Guides, News, & Discussion] Kutusov:
I know this is a P9 thread but this is sort of related... what's the thoughts on the Honor 8 compared to this? Seems like basically the same phone with the less clocked processor of the Mate 8. What's the energy efficiency of the Kirin 950 vs the 955? Would it be realistic to expect a noticeable difference in battery life?
[Huawei P9 Guides, News, & Discussion] Diaze:
Is the battery the same or worse than the s6 ?

I want to know if it s worth to change to the p9 bcuz some1 is offering me a p9 for my s6 flat.
[Huawei P9 Guides, News, & Discussion] eliashadow:
Yeah, battery life is better than galaxy s6, 1 hour+ SOT.
[Huawei P9 Guides, News, & Discussion] Diaze:
It s not worth then. I still get 5-6 h sot on wifi with my s6 plus i will loose all the development ..p9 dev thread is dead.

Only one rom..thank you for the answers m8

Also in gsmarena video playback battery is 12h and 12 mins on s6 and only 8h on p9...i watch lots of videos daily..
[Huawei P9 Guides, News, & Discussion] Kutusov:
From the numbers I've seen on GSM Arena, the P9 is worst in call time, web browsing and video playback. It still manages to have a couple hours more on overall battery life which I assume means it has a better standby time. But mind you the S6 wasn't tested with MM, so standby should be better now.
[Huawei P9 Guides, News, & Discussion] Diaze:
Yea..i think it s normal to last more cuz of the bigger battery.

The only thing that keeps me for not getting the p9 is the development...it s dead:( and i like to flash roms everyday :))
[Huawei P9 Guides, News, & Discussion] Kutusov:
Actually, let me take that back. The P9 should be way better judging by people's usage of the phones. It's usual to hear people complaining about the S6 not lasting a day and having to charge it a couple of times but only having to charge the P9 at night if they are going out.

I was going by battery life measures on GSM Arena tools but I just realize I can't use those charts as their method changed a few months back. They used to test the phones with a screen brightness of 50% but that will mean different things on different phones (Xperia Z5 gets surprisingly good results but that's because at 50% it's dim as hell). They now measure them with screens at 200nits regardless of what the settings say and the P9 is very close to the S7 and we know the S7 has a much improved battery over the S6. (and both the P9 and S7 where measured using this new methodology).

The Huawei is probably the most Applesc Android out there though, so if you want to mess around with ROMs etc, I would say sell the S6 and buy a brand new OP3. Or a ZTE Axon 7, I hear it comes with unlocked bootloader and a lot of people more into development are hesitant between that and the OP3. Both will have a very strong dev community! Both bargain beasty phones!
[Huawei P9 Guides, News, & Discussion] Diaze:
Thank you for the answers guys.
[Huawei P9 Guides, News, & Discussion] masi0:
Any ideas how long since screen off it takes wifi to go off? I see it almost all the time despite phone is lying on the desk. Also, not sure when p9 triggers doze, is it possible to check what app prevents phone from going to deep sleep?

Wysłane z mojego SM-T815 przy użyciu Tapatalka
[Huawei P9 Guides, News, & Discussion] Kutusov:
I'm not sure if you can do it through the UI but try a 3rd party app like GSam Battery Monitor out of the Play Store.
[Huawei P9 Guides, News, & Discussion] :
Running completely stock and unrooted on EVA-L09C440B138. I have the auto power off feature that shuts the phone off between 1am and 5:30am.

On this day there was what I would consider heavy usage, which included half an hour sat-nav when I hit traffic on the way to work, and then had the phone on browsing XDA, Reddit, Chrome at work (slow day), and some Youtube when I got home.

Brightness always fixed at 50%

On strong 4G signal at work, Wi-Fi when at home.

8 hours 30 minutes SOT and 21h 56 min uptime!

Black freakin magic. Love this phone.
[Huawei P9 Guides, News, & Discussion] mariosraptor:
Excellent battery life compared to S7 edge and. Really loving it. I get 6-7 sot
[Huawei P9 Guides, News, & Discussion] Kutusov:
Just shows you how difficult it is to gauge battery life on a phone, the Edge trumps everything on almost every test, crazy insane Mate 8 included! We need through-the-air charging technology! Mr. Tesla please come back, all is forgiven :D
[Huawei P9 Guides, News, & Discussion] Diaze:
[youtube]iyf3Zcu1voc[/youtube]

On this test the guys gets 4h and 10 mins on the p9 while the s6 gets 5h

[youtube]pggODXpS9d4[/youtube]

Idk how is this possible...he s testing every phone in the same way.

Maybe the s6 is more optimized for yt..
[Huawei P9 Guides, News, & Discussion] jibbbyy:
My experience with my battery life is very mixed.. I feel like it isn't optimized and I don't know the best way to do this.

My past 5 days are as followed:

Day 1: 100% at 6:00 am to 50% 12:25 pm

Day 2: 100% at 6:00 am to 31% at 15:53 pm

Day 3: 100% at 6:00 am to 56% at 11:29 am

Day 4: 100% at 6:00 am to 34% at 14.37 pm

Today I am 100% at 6:00 am to 76% at 10:42 am

I feel like the battery is leaking and I cannot identify what is draining it. I get when I play games it drops but when I am checking emails or checking the time it should stay at 70-80 percent all day. Maybe I am using it more than I realize.

There are a few power options I don't quite understand. Maybe someone can help explain them to me?

1) Protected apps

keep running when screen is off

2) Memory White list

apps will be skipped during cleanup

3) Consumption level

shows which apps are the most consuming. This includes things like "android system, OS and media server"

Can someone explain or link me to what these features do and how they actually work? I want some apps to remain running so they will work as intended, but I also dont want them draining the battery for no reason.

I am using GSam Battery Monitor, and when it says "50% of the battery is being consumed by __ apps", is that saying that the other 50% is not shown? Like GPS, or SoT, or mobile data? How do I pinpoint a more major cause of battery leakage?
[Huawei P9 Guides, News, & Discussion] darthkir:
Protected apps are the apps that wont be killed by the memory management when RAM is low.
[Huawei P9 Guides, News, & Discussion] Kutusov:
I like and trust that reviewer, so I don't know. I've asked a few other like Damir Franc which one he would recomend based only on battery life: P9 or S7. They all tested those phones and they all say they are close but the S7 is better. Because people say there's a big difference between the S6 and the S7, I'm just assuming the P9 should be better but I don't know. I know the S6 wouldn't please me on the battery department and I'm not too fond of Samsung without any real reason. In fact, my first Android was the first Galaxy and it was very very good.

And ironically enough, I ended up ordering an S7, so back to Samsung and having to relearn how to use the capacitive buttons placed the wrong way... everybody know "back" is on the left!!! :p
[Huawei P9 Guides, News, & Discussion] pcphobic:
Huawei P9 Battery Life Test

My Huawei P9 battery life test. So far pretty satisfied with it. A mixture of using Wi-Fi and Mobile Data.

Running time:1 Day 13 Hours.

Screen On Time: 6 Hours.

Power plan: Smart (next test I will switch to Performance)

Usage:

1)Light usage of Whatsapp.

2)Camera.

3)Apus browser quite often to surf web and access mobile facebook website (I don't use Facebook app bcs it's a battery drainer).

4) Short usage of Waze and Google Maps.

5) Background sync enabled

Note:

I disabled Google Now and Pedometer function/lockscreen widget.

Bluetooth disabled

Uninstalled Google + since I don't use it.

Uninstalled Facebook app since it is a known battery drainer.
[Huawei P9 Guides, News, & Discussion] mariosraptor:
I have taken a hit on battery life since debranding. I was on c150b140

And went to c432b170.

Since I can't have the same sot. Sitting around 4-4.5 hours.

Will do some tests.
[Huawei P9 Guides, News, & Discussion] mouwen:
I've heard someone in the Chinese Huawei forum saying if you upgrade, the battery life actually gets worse.

The best one seems to be B136 - B140.
[Huawei P9 Guides, News, & Discussion] lomunet:
around 9 hours lot of time with Boom Beach and Firefox... great battery life.
[Huawei P9 Guides, News, & Discussion] mouwen:
What is your phone's firmware version?
[Huawei P9 Guides, News, & Discussion] lomunet:
B166 deactivating all google ****s... kiosko...