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[Anandtech] Apple iPhone 4S: Thoroughly Reviewed

post #1 of 53
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Quote:
History loves to repeat itself, and even Apple isn’t immune to the yearly cycle of rumor and release. Leading to each year’s iPhone refresh, excitement, rumors, and hype build to a fever pitch, features and designs are added into an increasingly unrealistic combination, and finally everyone is silenced at the device’s eventual unveiling.

Today we’re looking at Apple’s latest iPhone refresh, the iPhone 4S (henceforth just 4S).
Source

I'm incredibly surprised I've not seen this zipping around the interwebs yet... nonetheless I'm just starting to read it right now. It looks to be another brilliant in-depth review by Anandtech.
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post #2 of 53
It's interesting that this review puts the battery life of the 4S on par with the 4, even though nearly every other review I've seen/read states that the battery life is worse than the 4. Everything else in the review is pretty much expected.
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post #3 of 53
My battery life was weird at first, but it is great now.

After a few charging cycles it went to normal. I'm sure there is a bug in the code that will be fixed with the next update.
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post #4 of 53
Good review, I didn't know the 4S had DDR2 RAM instead of DDR1 like the iPhone 4. Good information about the A5's improvements over the A4 as well.

Quote:
Apple's A5, first introduced with the iPad 2, keeps process technology the same while introducing a brand new CPU and GPU. The A5 integrates two ARM Cortex A9 cores onto a single die. The improvement over the A4 is tremendous. At the single core level, Apple shortened the integer pipeline without reducing clock speed. With a shorter pipeline the A5 gets more done per clock, and without decreasing clock speed the A5 inherently achieves better performance at the same clock. The move to the Cortex A9 also enables out-of-order instruction execution, further improving architectural efficiency. I've heard there's a 20% increase in performance per clock vs. the Cortex A8, but combine that with the fact that you get two A9s vs a single A8 in last year's design and you get a pretty big performance increase.

There are several situations where the A5's two cores deliver a tangible performance benefit over the A4's single core. Like Android, iOS appears to be pretty well threaded. Individual apps and tasks can take advantage of the second core without a recompile or version update. The most obvious example is web browsing.

Edited by lordikon - 11/2/11 at 6:49am
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post #5 of 53
Quote:
Originally Posted by AllyOmega View Post
It's interesting that this review puts the battery life of the 4S on par with the 4, even though nearly every other review I've seen/read states that the battery life is worse than the 4. Everything else in the review is pretty much expected.
Quote:
Originally Posted by Biscuits_N_Gravy View Post
My battery life was weird at first, but it is great now.

After a few charging cycles it went to normal. I'm sure there is a bug in the code that will be fixed with the next update.
I think the initially poor 4S battery performance has been tracked down to the automatic-update of time feature--it was unnecessarily constantly querying the network for local time. IIRC a fix has either been issued, or will be issued, which significantly improves battery life.

Interesting discussion, nice to see it.
    
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post #6 of 53
Interesting review. Thanks for the post .

I'll eventually get one of these shiny iphones because they just seem so well built. Holding one in your hand is just bliss. You have to compliment apple on that, I've never held a phone that felt so solid.
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post #7 of 53
Thread Starter 
Quote:
Originally Posted by AllyOmega View Post
It's interesting that this review puts the battery life of the 4S on par with the 4, even though nearly every other review I've seen/read states that the battery life is worse than the 4. Everything else in the review is pretty much expected.
That's probably the software bug.
Quote:
Originally Posted by lordikon View Post
Good review, I didn't know the 4S had DDR2 RAM instead of DDR1 like the iPhone 4. Good information about the A5's improvements over the A4 as well.
It's faster too, didn't he say? And yeah, very good info about the A5.
Quote:
Originally Posted by justarealguy View Post
Interesting review. Thanks for the post .

I'll eventually get one of these shiny iphones because they just seem so well built. Holding one in your hand is just bliss. You have to compliment apple on that, I've never held a phone that felt so solid.
Indeed they are and the screen as has been put by another, is almost as if it's printed on the glass itself, which is absolutely amazing. I've never owned a 4 so I can't compare. Just don't drop it!
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post #8 of 53
Quote:
Originally Posted by steelbom View Post
It's faster too, didn't he say? And yeah, very good info about the A5.
Indeed, memory bandwidth doubled from the 3GS to the 4, and again from the 4 to the 4S.

So memory twice as fast, A5 being about 20% faster than the A4 clock-for-clock, twice as many cores, rendering being anywhere from 20-600% faster, Wi-Fi and 3G are both 20-40% faster, camera sensor vastly improved, and almost twice the resolution for video as well.

I would say the 4S is quite a bit better than the 4, it just doesn't look like it on the outside. Deceptively fast I guess?
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post #9 of 53
Quote:
Originally Posted by steelbom View Post
Source

I'm incredibly surprised I've not seen this zipping around the interwebs yet... nonetheless I'm just starting to read it right now. It looks to be another brilliant in-depth review by Anandtech.
It's not "zipping around" anywhere because nobody really cares. It's just another smartphone nowadays. Indeed it is a really great phone, but one of many nonetheless.
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post #10 of 53
Quote:
Originally Posted by lordikon View Post
Indeed, memory bandwidth doubled from the 3GS to the 4, and again from the 4 to the 4S.

So memory twice as fast, A5 being about 20% faster than the A4 clock-for-clock, twice as many cores, rendering being anywhere from 20-600% faster, Wi-Fi and 3G are both 20-40% faster, camera sensor vastly improved, and almost twice the resolution for video as well.

I would say the 4S is quite a bit better than the 4, it just doesn't look like it on the outside. Deceptively fast I guess?
Don't say that, the 4S is a overrated piece of junk with a outdated screen, processor, camera, design, software, cool factor.

/Sarcasm.

Edit: Also, it only took 8 posts for the bashing to begin, and now after my posts the bashing is really picking up steam. Sad.
Edited by Tom1121 - 11/2/11 at 4:30pm
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