Manipulating 3G on the Blackjack

The entire premise of this article is to compare power consumption between 3G and EDGE, as well as Wi-Fi and EDGE.  Since we can't do all of the comparisons on the same device given what we have, we had to look at the comparisons independent of each other. 

Toggling 3G on the Samsung Blackjack isn't something that can be done by any visible menu, you have to instead enter into an admin menu by dialing the following code: *#1546792*#.

After entering the code, you're presented with a menu:

Selecting Network & Call Settings let's you configure network priority as well as network mode, the latter being what we're interested in:

Selecting GSM will turn off 3G and if you're in a location where EDGE is available, that's what the Blackjack will default to.  To re-enable 3G simply repeat the process.  We've found that sometimes the Blackjack will need to be rebooted before the switch will take effect. 

With a way of toggling the network mode, it was time to start testing...

Index Faster Browsing, but a Quarter Less Battery Life
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  • jellinek - Friday, July 13, 2007 - link

    Does the h.264 implementation on the iphone vs. the likely flash-based version on the blackjack impact this at all?
    Quicktime playback over the web (trailers set to loop?) might be a better way to determine EDGE/3G/WiFi battery life.
    Reply
  • MrJim - Friday, July 13, 2007 - link

    Anyone know if they will add MMS-messengering in iphone? Reply
  • GlassHouse69 - Friday, July 13, 2007 - link

    fuck iphone.

    that's all I have to say.

    stop reviewing it. it is lemming equipment that is overpriced and hobbled with a beautiful screen. feels like 5-6 years ago Mac intellect at use. get great graphical images, get stuck in the mud hardware, hobble it all somehow, charge 1000 dollars more than you need and bam, lemmings jump. wee!
    Reply
  • DavenJ - Friday, July 13, 2007 - link

    I guess this guy isn't going to buy an iPhone. Reply
  • Shark Tek - Friday, July 13, 2007 - link

    Yeah I bet that he can't buy it. Reply
  • puffpio - Friday, July 13, 2007 - link

    Is there a way to get this higher quality youtube feed for computers?? I'm tired of their pixelated crap. Reply
  • dacramer - Friday, July 13, 2007 - link

    Who cares how LONG the battery lasts when loading web pages. The real test is how many web pages the battery can load per charge. Even if the battery lasts half as long over 3g, it surely must load more web pages. Is it more than double? 3g may not be so bad with regards to battery life with this taken into consideration. Reply
  • Icehawk - Friday, July 13, 2007 - link

    I think the exact same thing - the more important metric is how many pages you can load not how long the battery lasts with constant clicking. Reply
  • Araemo - Friday, July 13, 2007 - link

    "The biggest impact of all is, surprisingly enough, talk time; with 3G enabled, the Blackjack's talk time is cut in half, with absolutely no benefit realized from the higher bandwidth standard."

    Do you want to know why 3G is the default for talk time as well as data transfers? 3G has more bandwidth per cell tower, and talk over 3G uses the same total bandwidth as talk over GSM.. but since 3G increases the available bandwidth, you use less of the cell company's resources if you're talking using 3G instead of GSM. So battery life be damned, AT&T wants to make more money. ;)
    Reply
  • cosmotic - Friday, July 13, 2007 - link

    Your graph on the talk time page shows the iphone using wifi. Shouldn't that be edge? Reply

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