Battery Life

One of the things Qualcomm promised would come with Snapdragon 800 (8974) (and by extension the process improvement with 28nm HPM) was lower power consumption, especially versus Snapdragon 600 (8064). There are improvements throughout the overall Snapdragon 800 platform which help as well, newer PMIC (PM8941) and that newer modem block onboard as well, but overall platform power goes down in the lower performance states for Snapdragon 800. In addition the G2 has a few unique power saving features of its own, including display GRAM (Graphics RAM) which enables the equivalent of panel self refresh for the display. When the display is static, the G2 can run parts of the display subsystem and AP off and save power, which they purport increases the mixed use battery life case by 10 percent overall, and 26 percent compared to the actively refreshing display equivalent. In addition the G2 has a fairly sizable 3000 mAh 3.8V (11.4 watt-hour) battery which is stacked to get the most out of the rounded shape of the device, and utilizes LG's new SiO+ anode for increased energy density compared to the conventional graphite anode. 

Our battery life test is unchanged, we calibrate the display to exactly 200 nits and run it through a controlled workload consisting of a dozen or so popular pages and articles with pauses in between until the device dies. This is repeated on cellular and WiFi, in this case since we have an international model of the G2 that lacks the LTE bands used in the USA, that's 3G WCDMA on AT&T's Band 2 network. I've tested 3G battery life on devices concurrently for a while now in addition to LTE though, so we still have some meaningful comparisons. The most interesting comparisons are to the Optimus G (APQ8064) and HTC One (APQ8064T) previous generation.

AT Smartphone Bench 2013: Web Browsing Battery Life (3G/2G)

AT Smartphone Bench 2013: Web Browsing Battery Life (WiFi)

Cellular Talk Time

The LG G2 battery life is shockingly good through our tests, and in subjective use. The combination of larger battery, GRAM for panel self refresh, new HK-MG process, and changes to the architecture dramatically improve things for the G2 over the Optimus G. While running the two web browsing tests I suspected that the G2 might be my first phone call test to break 24 hours, while it doesn't break it it comes tantalizingly close at 23.5 hours. I'm very impressed with the G2 battery life.

Device Charge Time - 0 to 100 Percent

The G2 also charges very fast for its battery size. I've been profiling charging behavior and current for devices for a while now, since I strongly believe that battery life and charging speed are complementary problems. You should always opportunistically charge your smartphone, being able to draw as much while you have access to a power outlet is critical. The G2 can negotiate a 2A charge rate on my downstream charge port controller and charges very fast in that mode. Of course the PM8941 PMIC also includes some new features that Qualcomm has given QuickCharge 2.0 branding.

Display CPU Performance
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  • et20 - Saturday, September 07, 2013 - link

    No, they are not too stupid.
    You are too stupid to understand that not everyone cares about the same things as you do.

    The simple fact that you are reading and commenting on this site is clear indication you are part of a tiny minority.
    You are completely disconnected from the needs and interests of mass market consumers.

    The sales guy you mentioned is paid by Samsung to sell more Samsung phones. Almost nobody uses SD cards.
    Reply
  • theduckofdeath - Sunday, September 08, 2013 - link

    Almost no one uses SD cards? Do you have any fact to base that statement on?

    SD cards are not the primary reason people prefer Samsung phones, but they are definitely one of the contributing arguments when people buy phones. Clearly, vanity is not as highly rated in real life as HTC thought. People apparently prefers to spend their money of useful things, not just looks.
    Reply
  • UpSpin - Saturday, September 07, 2013 - link

    Now you come with rooting. I'm a science student and technically interested (as it's obvious because I'm here on this site). I've rooted my smartphone and will do the same to all my future smartphones. It's a no brainer for me. A lot of my friends own an Android smartphone, too. They are in no way stupid. But none of them has a rooted device. I don't know a single one in my surrounding who rooted it. To some I explained them the beneifts, how to do it, etc. But none did it. Why? Because they had no urgent need for it and didn't want to 'waste' time doing it.
    Some of the smartphones they use have a SD-Card, none of them really cared. None of them heavily uses it.

    I'm sorry to burst your ignorant selfish bubble, but not everyone is like you and wants the same you do!

    Samsung has the highest marketing expense of possible any company on earth. People who go in a store and want to buy a smartphone, know mostly nothing about the different flavors of smartphones, but they do know, that Samsung has some, lots of them, with nice looking features, according to the ads they see in TV/web/posters just everywhere! The sales person also probably knows the advantages of Samsung devices best, so it's no surprise that most people just buy a Samsung smartphone. The fine differences between the different smartphones are negligible for most people and few even understand them or value them.
    Few know what OS they are running on, let alone the precise Android version.

    The majority chose a smartphone by:
    1. Price
    2. Look, feel, size
    3. Devices they saw from ads
    4. Recommendation from friends

    You aren't the smartest either, if you think that the only outstanding feature of the HTC One is the dual speakers. There's the aluminum body, OIS, magnitudes brighter display, software features and others left, which you don't care about and thus don't care about.
    Reply
  • BabelHuber - Saturday, September 07, 2013 - link

    You are calling me stupid while you are to dense to recognize two major points I made besides rooting:

    1.) People use SD-cards to store music at. I know lots of people who use their SD-cards exclusively this way without having rooted their phones.

    Only an imbecile can say that it is no advantage that you can put an SD-card into your notebook, copy all movies and music you want to it, put it into your phone and use it.

    You do not need much technical knowledge to do so, and in fact lots of people do exactly this. Ask them if this feature is worthless!

    2.) You do not seem to understand the gap regarding sales between Samsung and any other Android phone manufacturer.

    Samsung sold about 70 Million smartphones in Q2 2013, while LG, Sony, HTC, Huawei and ZTE can be glad to sell one tenth of this number!

    And you say the fact that SD-card support and a removable battery play no role at all? And then you call me stupid?

    Let me give you a clue: If only 5% of Samsung customers care about SD-cards, this is 3.5 Million customers per quarter. If 10% care about this, it is 7 Millions.

    And you are telling me that this is a non-issue for companies which sell 5-7 Million smartphones per quarter? That they do not want or need these customers?

    I really do not understand what is so hard to understand here!
    Reply
  • maximumGPU - Saturday, September 07, 2013 - link

    Are you really saying that you single-handedly just uncovered the reason for HTC, LG, Sony and all the rest's low market share?
    And here they were scratching their hair completely baffled at just why Samsung handsets were selling so much. Everyone in there market research team should be fired for failing to see that simply adding an SD card slot would immediately result in at least 3.5 million extra sales per quarter.
    Reply
  • BabelHuber - Saturday, September 07, 2013 - link

    No. I am saying that this is one reason - in the sense that this lacking features makes it harder for them to compete.

    And yes, I think their management is stupid.
    Reply
  • blacks329 - Saturday, September 07, 2013 - link

    You honestly think 1 in 20 people care about SD cards in their phones? I suggest you do a poll of the layman and find out how many of them actually care.

    Apple sells 40 million iPhones a quarter, I wonder how they can sell so many?

    /psssssst it's not SD cards
    Reply
  • BabelHuber - Monday, September 09, 2013 - link

    When a company wants to compete against Apple, it makes sense to look at the strengths and weaknesses of the competitor.

    Apple does not have removable batteries and SD-card slots.

    So it is a cheap win to offer these features for those customers who do care. OTOH competing with Apple without having such obvious advantages is tougher.
    Reply
  • deskjob - Saturday, September 07, 2013 - link

    Hey bud, I agree with you - the SD card expansion is a valuable feature to have. If I was given the choice to have it or not, with absolutely no trade-off, then duh of course I'll want to have the feature.

    But I want to share my personal experience so far - my smartphone history up to this point is the HTC Thunderbolt, Rezound and now the One. I loved having the SD card expansion. I rooted and S-off'ed both the Thunderbolt and Rezound (shorting out two contacts on my brand new Rezound in order to get S-off was a damn crazy leap of faith). And I always thought that I wouldn't get a phone without SD card expansion, ever. Period.

    But then when I actually looked at my usage pattern - after the initial transfer from the Thunderbolt to Rezound, I never once took out the microSD card again for data transfer. Hell, I actually bought a 64GB card for the Rezound (I jacked the 32GB from the Thunderbolt originally), because the phone actually supported it unofficially (the card capacity didn't exist when the phone was first out!). But you know what... the 64GB card never made it into the phone. It's now in my Nikon SLR.

    And dude trust me, I put that extra storage space to good use. Talking about multiple NAND backups, my music library, a movie or two, photos, Titanium app backups, the works. But that's just it - what I need, and I suspect most people need, isn't the microSD expansion per se. We need SPACE! As long as there's enough space to fit your need, who cares if it's microSD, internal, or even cloud? Okay, cloud might be iffy with security and extra power draw from data connection, not to mention data cap (not for me though, unlimited data hehe). Look at it from another perspective - if your phone came with 128GB of internal space, would you be able to do without microSD expansion?

    And as you might know, the way Android handles external SD space isn't very elegant. You have to keep track of the system partition, the internal SD, and the external SD. It sounds trivial, but it's not elegant and gets more annoying as you go forward. At least for me. I honestly can't see the majority of the public dealing with this and feeling happy about it.

    Marketing is everything, unfortunately. I think we've reached a point in the smartphone market where most phones are ADEQUATE. They'll do the job of calls, internet, chat, camera, etc. Marketing is the key to making people want to buy your product. Samsung is great at it. Apple is great at it. HTC and the rest, not so much.

    Did you know that Samsung went as far as to hire poor college and grad students to post negative comments about competitor phones on major tech review forums and sites? Look it up - they admitted to it, and blamed it on some "rogue individuals" within the company. No... they were sorry they got caught.
    Reply
  • nerd1 - Saturday, September 07, 2013 - link

    Yes expandable storage is so old school - apple will soon make macbooks with soldered on SSDs, cameras with only internal memory, and so on. In fact they are already doing that (rMBP's RAM is soldered and SSD is proprietary format) Reply

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