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Maybe ten or fifteen seconds each end of the call. But how many calls are being made, and received a day, or week? The more calls, the more draw from the screen. It's likely that ten seconds screen draw is equal to one minute of talk.
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I'd respectfully disagree. I did the sums once, and found that stand-by battery usage accounts for about 40% of my battery usage. If you leave your phone on all the time, it definitely adds up.
I won't argue that number. In fact, it equals what I'm saying. The large majority of your battery use is not from standby, meaning that you've cut your standby time by 60%. Depending on the phone, that would mean that you only have about a day to just a few hours of standby time left.
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Of course, I do not currently own a smartphone, and I think what you're talking about would be more specific to a heavy user on a smartphone. Even then, though, using your worry about the screen being on for a few seconds before and after calls as a benchmark, standby time still matters a bit.
Yes. Smartphones use battery life like a vampire uses people. What is true for your phone about battery life is going to be much more so for a smartphone, particularly one with a really large screen. If you used a smartphone the way you use yours now, there would be little need for one. Therefore, your usage patterns would be different, and your standby time might drop to 20% of the battery life.
We are really just talking about smartphones. Their much more powerful processors use up more power as well.
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See above.
Oh, and I looked up the Anandtech article that Teno cited, where the old, obsolete Blackjack had a lot less talk time with the 3G on. Given that Anandtech measured the talk time at 4 hours 11 minutes with 3G on for the old Blackjack, and Samsung claimed 3 hours, I'm going to say that Samsung measures talk times with 3G on, and more than that, are very conservative in their rated talk times on top of that.
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Oh, and I looked up the Anandtech article that Teno cited, where the old, obsolete Blackjack had a lot less talk time with the 3G on. Given that Anandtech measured the talk time at 4 hours 11 minutes with 3G on for the old Blackjack, and Samsung claimed 3 hours, I'm going to say that Samsung measures talk times with 3G on, and more than that, are very conservative in their rated talk times on top of that.
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Sure. Samsung it a pretty good phone maker. I had both the i300 and i330 Palmphones. Both were pretty good as far as usage went, but 3G wasn't prevalent then and neither phone had it.
But we don't know how others are rated.












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