Battery Life

With everyone sharing the same base hardware and software there are only two items that will ultimately impact battery life between vendors: screen type and battery size. The pecking order is pretty easy to follow. Smaller LCDs will be the best on battery, larger Super AMOLED screens will be the worst. The battery scale is even easier to define: bigger is better, but heavier.

We’ve been testing three Windows Phones: HTC’s Surround, Samsung’s Focus and the LG Optimus 7. The HTC and LG use standard LCD displays, while the Focus uses the same type of Super AMOLED screen we saw in the Fascinate and Epic 4G.

The LG uses a 5.55Whr battery compared to 4.55Whr on the HTC Surround. As a result LG gets the best battery life out of the three with the Focus coming in last due to its Super AMOLED display.

Microsoft mandates three discrete display brightness settings on all phones: low, medium and high, coupled with an automatic brightness mode. The three phones delivered very different levels of brightnes at each setting:

Brightness Comparison (White Point)
Phone Low Medium High
HTC Surround 10.4 nits 183.1 nits 405.7 nits
LG Optimus 7 130.4 nits 259.1 nits 381.2 nits
Samsung Focus 61.9 nits 143.1 nits 234.3 nits

 

Brightness Comparison (Black Point)
Phone Low Medium High
HTC Surround 0.03 nits 0.39 nits 0.88 nits
LG Optimus 7 0.28 nits 0.56 nits 0.82 nits
Samsung Focus 0 0 0

Overall battery life of these Windows Phones ranges from average to above average in the case of the LG Optimus 7. The use of Qualcomm’s 65nm SoC definitely doesn’t help battery life, but Microsoft appears to have done a reasonable job with power management.

The first Windows Phones won’t be in the same realm of battery life as the iPhone 4, but it’s a reasonable starting point. Given a normal/light workload you can easily make one of these things last a full day on a single charge, but heavier users will probably find themselves charging once in the early evening. As with most aspects of the platform, we need to see significant improvement in the next 6 months for Microsoft to be taken seriously. Luckily for Microsoft, where it is today isn’t a bad place to be.

The Windows Phone 7 Connector for OS X The First Phones: LG Optimus 7
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  • Shadowmaster625 - Friday, October 22, 2010 - link

    It cant play avi files? What do you call a $500 device that cant play avi files? FAIL.
  • beefnot - Friday, October 22, 2010 - link

    I'm so sick of seeing "fail" in user comments. 99% of the time, it follows a point or points being made that wouldn't have swayed them to deem it worthy anyway. YAWN.
  • mutatio - Friday, October 22, 2010 - link

    I'm glad you guys found it to be as smooth and useful as you did. Based on what you described and the corresponding pictures, however, I'm having a hard time understanding something "just works" when the UI looks like a crap sandwich and almost makes my eyes bleed. "No, we don't use those oh-so-80's icons that graphically represent what the App does. We're much too posh for that, minimalist traffic signs for everything! Brilliant!" Maybe it'll be different with hands on, but it looks like MS went out of their way to try and make this thing look clever and almost abstract. Think myspace made into a smartphone, and if you're like me and think that myspace pages more often look like pop culture chewed up, swallowed, and thrown up onto a web page, then you get where I'm coming from. If that is the case when I get my hands on one of these, I can't see how MS can get any significant traction in the smartphone market. They might get some young emo hipsters who dig the abstract layout, but the appeal thus far of iOS and Android is the overall ease of use. My impression from your review, despite your reassurances, is that MS has again made a product much more complicated than it needs to be. I hope for MS' sake that is not the case when actually using the phone.
  • MacGyver85 - Saturday, October 23, 2010 - link

    You'll just have to try it to appreciate it I guess.
    I can understand people when they say the interface looks bland or overly simplistic based on "screenshots" of the UI. But when you see it in person it's so much better. Really.
    Likewise with how you navigate around it. It's just so intuitive you don't for a second have to think how to do something. Every time someone asks me if what it's like I always respond that they'll have to use it themselves. And everyone that does loves it. Seriously :)
    Dare I use it but what the hell: it just works!
  • DJJoeJoe - Saturday, October 23, 2010 - link

    I don't think any OS at this point can grab a drastic number of market share like we see in the phone space obviously, or even the slightly slower moving browser space. Modern Operating Systems are so mature at this point that there is really little you can do, both Win7 and Snow Leopard were just small refinements to their previous versions.

    I think it's doubtful that even something as force-ably drastic as Chrome OS will do anything to the landscape either, even if Google bucketed down and really nailed it. Sadly the market share is ruled by the people going to costco and grabbing up a pre made pc, or large corps running xp, and I can't see something drastic being sold to either groups in the next handful of years.

    tis all in the phones these days, and I wish I had a time machine so I could get the second wave of hopefully nicer wp7 handsets and maybe a good update to the os itself. Don't got the money to spend on a 'amazing start'.
  • Sabresiberian - Monday, October 25, 2010 - link

    Looks to me like Vista's bad press helped Apple reach 9% market share, but that's as far as they've moved up. Win 7 is sweet and everyone knows it so Apple is no longer making headway.

    I don't want Microsoft execs to think that way though - like was written in the article, I think Microsoft performs better as an underdog, and if they think more in terms of being threatened by Apple or someone else then perhaps they'll be more inclined to put a shining example of what they can do out on the market.

    Glad to see Microsoft did produce a product with some shine.

    ;)
  • dotroy - Thursday, October 28, 2010 - link

    Windows 7 phone is good ...umm ..some things not as good ..but win7 phone is good, there are somethings done better by others OS but win 7 phone is good. I never felt like this before. This is a paid advertising. Anand is making good money.
  • pete2s - Thursday, October 28, 2010 - link

    Will Windows 7 Phone store apps on the ROM partition? If so, this severely limits the number and size of apps as well as their quality.

    Although Android is evolving past this limitation, Android, Blackberry and Palm phones store the OS and all apps on an encrypted partition referred to in the specs as the ROM. Usually, this ROM is 512MB. After the OS is installed, the phone has less than 300MB for apps.

    Initially, I thought Windows 7 Phone would not store apps on the ROM because of its unified storage system that creates a single volume. If this were the case, however, there'd be no point in having a larger ROM because the ROM would only be holding the OS + the 60MB limit of pre-installed software. Some phones, like the Samsung Focus, do have larger ROMs though (1GB compared to 512MB). The only point of having a larger ROM would be to store more apps because apps are installed to the ROM.

    If the above is true, Windows 7 Phone will be severely limited in app size and thus development.
  • drwho9437 - Monday, November 1, 2010 - link

    "It’s almost as if Microsoft is taking Apple’s approach and simply letting everyone build iPhones."

    Exactly and it is genius, it means the cost margin will vanish and the experience will still be as the software people want, people won't think poorly of these phones just because of a few badly designed devices they used. Let's hope it works out.
  • owbert - Monday, November 1, 2010 - link

    best review of win7 phone amongst others. great work!

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