The Huawei P8 Review
by Andrei Frumusanu on June 4, 2015 8:00 AM EST- Posted in
- Smartphones
- Huawei
- Mobile
- P8
- Kirin 930
Battery Life
The P8 has an typical 2680mAh (10.19Wh) enclosed battery which serves as the power source of the phone. This puts the expected lifetime of the P8 towards the lower range of today's smartphones, but given the rather efficient screen, it could go either way for the Huawei flagship.
Starting off with our WiFi web-browsing test, we see the P8 achieve 8.76h of lifetime. Although, again, we have to mention that this doesn't particularly represent any groundbreaking number, it still is a good performance given the battery size of the phone.
I've tried a go on LTE testing for the P8. In previous reviews I've mentioned that I had patchy coverage for 4G, but the P8 still managed to get an average reception. I'm not sure which frequency band it used, but I suspect it must have been the 1800MHz or 2100MHz band as the 800MHz band on my location is too weak and caps out at 0.2Mbps. As a reminder, this poses a discrepancy in the results as our other editors are able to test battery life under better signal conditions.
The HiSilicon Balong modem sadly performed very badly, coming in at only 5.33h. The device was getting noticeably warm when compared to the WiFi test - meaning the modem and RF system are at fault.
We now move on to PCMark battery test, which is a mixed load benchmark with web browsing, video playback, word processing and photo editing.
The P8 scored 6.03h, which is good and on par with other devices. This test in particular showed some horrid results for the Kirin 920 devices and showed off how inefficient that SoC could be during normal loads. One remark I would like to make is that the P8's battery life may be actually a tad higher as reported by PCMark because the test artificially stops when the battery gauge reaches 20%; I've noticed in other tests that the fuel-gauge in the P8 can be rather inaccurate, as the actual battery was able to still provide current for another half hour in our web tests even when showing 1% capacity. The same is valid on the other end, as the device will show 100% even though it will continue charging for another half hour after that.
In BaseMark OS II's battery rundown test which stresses mainly the CPU with high loads, the P8 manages to score very well. This is an expected outcome as the Kirin 930 has no large CPU cores which could cause high power drain and lower the efficiency of the phone.
While I didn't have the proper tools to root the P8 to be able to get detailed power curves on the CPU cores, I again relied on the internal fuel-gauge to get some estimates through a CPU power virus.
| Huawei P8 Device Power & Kirin 930 CPU Load Power (Estimate as measured by internal fuel-gauge) |
||||||
| Avg. Total Power | Incremental Difference |
|||||
| Idle | ~0.91 W | - | ||||
| 1 Thread | ~2.48 W | ~1571mW | ||||
| 2 Threads | ~3.03 W | ~556mW | ||||
| 3 Threads | ~3.56 W | ~533mW | ||||
| 4 Threads | ~4.19 W | ~624mW | ||||
Idle power is measured at 200cd/cm² and comes in at around 0.91W. Looking at the incremental differences in power when adding additional threads seems to add somewhere in the region of 570mW. This is a reasonable number for a Cortex A53 core clocked at 2.0GHz on a 28nm process.
What is shocking though is the 1W overhead that happens when going from idle to 1 thread load. Theoretically what should be included in this figure is the power consumed by the performance cluster other non-CPU blocks coming out of their power-gated states. I haven't seen this behaviour happen on other SoCs such as from Samsung or MediaTek, where this overhead was usually only around 20% of a single core's power. This phenomenon is a tad worrisome as the impact on the Kirin 930's power efficiency could be quite large. This is definitely an aspect that warrants more investigation once I have the proper software tools for the P8.
On GFXBench, the P8 managed to perform well at 3.8h runtime, but only because the SoC throttles to ~45% of its maximum performance for about the whole duration of the run.
One notable metric that we don't really have a objective test-case for is idle battery life. Having now several devices in my collection I tend to leave them on on WiFi for extended periods without using them. The P8 was surprisingly bad in this metric as it only ever managed to survive for 2 to 3 days, while for example my Samsung devices are able to go up to 7-10 days under the same conditions and installed applications. I don't remember having quite as bad idle lifetime on the Honor 6 or the Mate 7, so I hope this is a software issue as opposed to increased power consumption by miscellaneous device components.
Charging Time
Althrough Huawei promised that the P8 would include a quick-charger by default during their London launch event, the actual device just had a normal 5W charger bundled in. In fact, the bundled accessories look nothing like the ones that were presented during the launch:
5.0V 1A charger... generic USB cable, similar but definitely not the same premium headphones ..
.. did we miss part of the story here?
Huawei offers also offers the device in more premium variants with a higher clocked 2.2 GHz SoC and 64GB of NAND memory, so there's the possibility that maybe the accessories for those versions differ too?
Nevertheless, I tried charging the phone with various other chargers with higher power outputs and voltages, but the P8 remained an exceptionally slow charger no matter what I connected it to.
The end results is that the P8 is one of the slowest charging smartphones we've yet tested. While it's understandable that Huawei might have backed off the fast-charging claim in order to preserve the battery longevity of the P8, but having it charge even slower than Mate 7's 4100mAh battery is quite a feat in itself. A device teardown by IT168 revealed that the battery chemistry comes in at only 3.8V versus 3.85V such as in the Mate 7 and other modern devices, pointing out that Huawei chose to employ cheaper materials. Again we see the a quite misleading battery percentage gauge, as even though the P8 hits 100% after 175 minutes of charging, the battery still receives current for another 30 minutes until it is truly fully charged.
If you're low on battery and want to charge your device quickly, the P8 is definitely not the device for you, as it takes about an hour to charge only 40% of the battery.
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Peichen - Friday, June 5, 2015 - link
I am an iPhone 6+ user but I have no problem this review uses Galaxy S6 camera for comparison as the S6 have an excellent camera. The SONY RGBW sensor in this camera might be used in the upcoming iPhone 6S in September and it will be interesting to see with SONY and Apple's refinement how it will stack up against Note 5 and G4.serendip - Friday, June 5, 2015 - link
Huawei should really stop with this Kirin nonsense. The modem sucks power, the SOC's power management is a joke, yet Huawei are crazy enough to charge flagship prices for a midrange phone that struggles to keep up with much cheaper offerings. A Mi Note is a cheaper and better option.TekDemon - Saturday, June 6, 2015 - link
I know this isn't a nexus review but these charts would look rather different if a nexus 5 running 5.1 and a nexus 6 on 5.1 were used since Lollipop 5.1 finally brought a lot of changes into android that were manufacturer dependent. The nexus 5 on 5.1 posts better random writes than any of the phones on this list for example.OOwl - Saturday, June 6, 2015 - link
I do agree with you in terms of 5.1 improvements. I am currently testing a small upcoming Motorola handset and although it's not a monster in terms of power and should be on paper lower powered than the processor in the P8 Lite, it is soo much more responsive. Battery life is also rather underwhelming on these Kirin SoC powered handsets...R3MF - Saturday, June 6, 2015 - link
just picked this up on contract for £21x12, or looked at another way; ~£250 for a phone with 300m/5000t/1gb.for that price its flaws pale into insignificance.
sunnohh - Sunday, June 7, 2015 - link
Jelly, 1 year contracts across the pond! Extremely low rates. Don't tell me you get reliable service everywhere.R3MF - Sunday, June 7, 2015 - link
i live in a rural area, we never get reliable service. :)sunnohh - Sunday, June 7, 2015 - link
I pay 45$ for unlimited call text and 5gig data through wal mart's plan that uses an AT&T sim. Nexus 5 is about 97% reliable, but it's bring your own phone. Which around here is the exception rather than the rule. The rule being Verizon near 100% reliability and exhorbinate rates and long contracts with obscene break up fees.Ethos Evoss - Friday, June 12, 2015 - link
Jeeezus anandatech u made me sweat PROPERLY I finished this mega ,tera hexa .. eem .. NO !I will go rather other way ...
It took me over and hour to finish this mini, micro , nano , piko , errr.. I'll skip rather all metrics and I'll jump directly to deep ATOM review I have EVER seen in my life ..
ALWAYS when it comes to Huawei devices especially to find EVERY single NEGATIVYTY to their products..
I will say you are MOST weirdest website in actual WORLD ..
But that's fine that is your probably style to do autopsy to find weakness..
To summarize your (in few ways) misleading review to pull people off buying phone bcos of bribed by apple or who knows who doesn't bother me .. but u are cowards anyway ..
we can start :
1.introduction and design:
* ''only supports UE Category 4 LTE speeds, reaching up to 150Mbps downstream and 50Mpbs upstream.''
-So u claiming that this phone supports LTECat 4 only ?? u liying or u have wrong info as this phone supports LTECat 6 !
*''We had some very harsh words for Mate 7’s camera performances, as both featured very disappointing photo and video quality.''
-Ecxuse me ?? I have feeling that u HAS no experience of taking pictures at all I own Mate 7 and everybody says that my pictures on phone are amazing WTF u trying to say weirdos?? liars! isheep!
*''This is the second kind of implementation RGBW (Or RGBC) after the OmniVision unit found in the original Moto X.''
-yeah why u higlighting it IT WAAS second?? why nobody been talking about it THEN in crappy fail moto x ? what u trying to protect ? or put itno negativneses ?? so WHAT if it''s second ?seriously!
*''It should be noted that the black frame surrounding the actual screen makes it seem as if the device’s size-bezels are much smaller than what they really are, something which is very visible on the lighter coloured models.''
-yeah u picked white version so what u been expecting ?? so stupid every phone which is in withe color must have black borders jesus christ u are unbelieveable .. did u mention this in crapple iphone 6 review? you need more knowledge that if u have black screen version u don't notice any borders! mentals..
*''Huawei called the design a “single audio chamber speaker system”, but in practice the right grill is essentially just for aesthetics and only serves as a housing for the bottom microphone. Covering up the left grill will completely dampen the audio output of the device.''
-eem excuse me and what is the problem that phone has simetrical grills which gives better look ?!?
on your crapple phone wht is there 5 holes on right side and 2 on the left how rubbish crap looking !
dampen audio ?? oh yeah even iphone 5 or 6 or s6 or edge has dampen audio bcos everybody covers holes so obviously sound will be dampen WTF u mentiong this SHT??1?!!? ar u nuts?
* camera module seems to be still 1.5mm underneath the glass.
-ar u serious with this mention ?? jeezus christ .. u are total weirdos FOR REAL ! ATOM REVIEW!
*''he only gripe I’ve had with it is that it seems to have some empty space underneath the back of the phone as if you try to squeeze it will flex inwards by up to 1mm''
- Whaaaaa??? OMG what THE HELL are you doing with smartphones seriously u need HELP !
2.Software - EmotionUI 3.1
*''Huawei continues the choice of not including an application drawer with the EmUI launcher, so all installed apps are placed on the launcher screens.''
-So what? BETTER NOT complain here as u wud have to complain to your beloved iphone so u rather stayed quiet right ?
*''It would be appreciated if Huawei had at least included the option to disable app-icon framing throughout the OS''
-I NEVER EVER heard in my life that SOMEBODY wud comes up with this NON-SENSE sht called ''app-icon framing throughout '' trully u are word inventors ! ... app icon framing .. jeezus christ ..
*''I've praised Huawei's inclusion of a per-app permission manager in the Honor 6 and Mate 7, and it sadly seems that the P8 drops this practice as it no longer is exposed to the user''
-the reason why they didn't include this feature anymore was because all constant annoying remind to close all important apps and services which needs to be running and users been complaining by not receiving notifications , locations not found ! in other phones never been why it bothers you now???
*Although the P8 lacks a fingerprint sensor ''
-trully who uses it?? nobody .. only gay geeks with their glasses 200 bioptries
*''a feature where one would double-tap or draw with a knuckle to capture a screenshot''
-I believe if u root the phone which is easy to do so .. u can nicely disable this feature in file systems (eg build prop)
3.CPU & System Performance
I really NOT going to break down this section as there are 1000 negativeness I would be here till next christmas..
Simply your bars, graphs and compares ARE TOTAL POINTLESS/USELESS t
Completely obsolete as I browse or edit on my mate 7 or on P7 perfectly no problems as any other phone.
I noticed that If iphone or any other phone you adore has less or shame/laughable results u simply not include it in your graphs .. u cowards ..!
4.GPU Performance
Same as above no comment on useless completely not REAL world results as everybody plays games on the phone without any issues .. or play films.. on P7 we normally watch youtube vids in 1080p or 720p without problem ..
yeah your pathetic iphone can be on top but good luck it its even crappier battery which will stay last half a day or less !
5.WiFi Performance and nand
I really don't understand another pointless tests of wifi performance ..
it is clearly USELESS /POINTLESS to have strong wifi another battery drain ??
Wake up, u measuring NETWORK speed instead of INTERNET speed ! What u wanna tell me now u playing multiplayer over smartphones behind desks like idiots like onPC where wifi network speed is inevitable
Pleease DON'T be naive, Huawei instead of you THINK and don't implment stupidly highest wifi module tuner radio JUST for pointless network speed which nobody will NEVER use it for every day use ! Everybody needs fast internet download speed for quick loading pages or downloading files don't you think ? And this P8 managing at best ! Yu fkin thanks god u didn't unsolder wifi chip to check if it's OK or what.. myyy gooosh ..
* While the new eMMC doesn't break any records, it's now among the "average" performing devices out there, as opposed to the horrendous performances of the Mate 7 and Honor 6
-horrendous .. wow so dramatic? I never noticed any horrendous like u oddly describing - bitching !
6.Display Measurement and power
*''together with a NovaTek NT35695 display controller IC''
-jez so u mentioning controller wt-hell and u can tell us brands of capacitors and resistors too ? i think that is important too n ?
*''I noticed a very weird behaviour of the display's brightness that cannot be explained by usual mechanisms such as CABC. The OS clearly alters brightness depending on the application - for example using a browser such as the stock one or Chrome, along with other random applications such as Dropbox or FX Explorer will cause a dimming in the display, if one opens up the recents menu or goes back to the home-screen then one can see how the backlight brightens up. One would think this can be explained with by assuming the default launcher and OS elements are allowed a higher luminosity than other apps, but I've discovered that many other apps don't dim the display.''
- Right here is ONLY first thing right now I can agree with this issue ... yes I have noticed dimming in chrome but u didn't consider it is caused by app ? the chrome app causing this and some others because when u open chrome it auto changes resolution don't thik that you surfing in 1080p ...
this happens to me with my mate 7 so i just increase brightnes a bit and volia .. problem solved..
*''Huawei P8 backlight bleed''
Every phone with ips screen has bleed it is caused by stress which is put by phone frame where screen glass lies .. i means that you will NEVER craft housing middle frame bezel 100% straight by machine .. it would have to be laser machine NOT CnC .. so when screen is placed into frame there is significant bend , squeeze of glass ass glass is slightly bendable elastic
Huawei's GREAT feature which NO ONE phone has it is white Color temperature
In this case , I will call it ; this new case (new and new IPS technologies comes across) this neo-ips screen it seems that is not playing together with color temperature feature..
As it perfectly works with M7(mate7) P7 I have color temperature set nearly to max about 85% !
Looks like due to new IPS technology and that RGBW or RGBC feature in LCD has conflict !
In this case (as been this explained in warm results and cold results) It is necessary that once user will be watching films or photos will have to change color temp to warm and WHEN will be surfing on internet and reading text definately slide it to the cooler side ... (not max as it result bluish distortion)
7.Battery life and charging
Again your beloved iphone has to be on top.. aaahh well ...
I truly doubt it is better than mate 7 .. rubbish .. ppl saying it has not great battery at all ..
I won't comment this
In my real world battery life on my mate 7 is nearly two days and on my GF's P7 is whole day ..
I don't genuinely believe your iphone or others has better battery .. NO chance !
For charge I don't mind as I charge phone over night so in morning all is ready ...
8./9.Camera and video
Only to say that seen couple vids on youtub or pics on parena or Garena and ppl managed to make nice, great photos so don't really understand your AGAIN so much hatress to this phone
I agree video recording is not good part but pictures are very good and even at night ..
10.
DISASTER ... ANANDATECH ....YOU are ICON of the internet
I will name you KINGS of WEIRDO-GEEKS ... :DDDDD
Huawei haters from unknown reason ... bribed by apple ? to keep your site above water..? as everybody corrupted smartphone sites..
Remember Huawei phones ARE NOT for any performance .. you are brainwashed by your fixed bug in head that all in the world HAS to be highest, fastest, best... you are all wrong..
Huawei manuf. they DID described it what they phones are for.. for what use
Firstly for elegance , then smart look, for smart ppl not for kids like you type; aah that is sloow that is crap I don't want it gpu and cpuu is sloow..
This smartphone is for grown ppl grown man in suits , for managers, for social women in beautiful dress they love nice and sleek and slim light design, which they will stick this review into your ass and we will say ''WE SIMPLY DO NOT CARE'' if it's not highest specs. GTFOOO
|You GLASS-GEEKS
CIAO
hmdqyg - Wednesday, June 17, 2015 - link
The "T-Rex Offscreen Power Efficiency" is pretty useful. Could you perform the same test on Tegra X1, Tegra K1, A8x, Snapdragon 810 and Snapdragon 801?