Replying to: Galaxy SIII reviews question. by Captain Ahash
One way to test is in a very special, very expensive lab, (like the kind we showed in our recent article about Sprint's labs.) That's the only way to eliminate variations and produce consistent results.
The other way to test is to simulate real-world usage as much as possible. That will generally expose very good or very poor battery battery life, and we feel it's the most helpful to people. But the results are rough estimates, and can be somewhat inconsistent, because we're dealing with real-world network conditions, which vary by the microsecond.
With that said, there are some factors that I can think of that would explain the differences. LTE is battery-hungry. We did note that AT&T's (LTE) version has slightly worse battery life than T-Mobile's (non-LTE) version. Sprint's version also has LTE, and we waited until we could test it on an LTE network. The new-ness of the network also matters. Newer networks tend to be spottier and not as finely-tuned. A better network = better battery life, for a number of reasons. Therefore it's not surprising that Sprint's extremely new LTE network would produce below-average battery life tests. That should improve over time.
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