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Looking only at the numbers, it's a 16% bigger battery (1560 mAh -> 1810 mAh) with a 18% bigger screen (4" -> 4.7"). Considering that the screen has an energy impact about 100x greater than the CPU, any energy savings in the CPU will hardly improve battery life.

So these napkin calculations say that the battery life will be 116/118 ~ 99% of what it was before. So we may see the slightest drop in battery life and Apple will ignore it and advertise it as having the exact same battery life as before.

Do you realize that your napkin calculation assumes that the screen power use would represent exactly 100% of the entire power consumption of the device?
 
Using a larger battery should be the absolute last resort if you can't figure out any other way to increase battery life. Larger batteries are heavier and reduce the amount of space available for other things like sensors, GPUs, and other chips. And one of the biggest benefit in my opinion of having a smaller batter is how fast it charges. To further drive home the point, consider that the ideal device would have infinite battery life with no battery.

The only way you get to that ideal is through software optimization and/or using better batteries rather than larger ones.


So just because Google, Samsung, and the rest of the Android OEMs failed in battery life innovation through things like software optimization and instead of engineering better solutions just lazily stuffed in larger, heaver batteries that take longer to charge and use up more internal space doesn't mean that Apple has to do the same.

And the methods Apple are using to get thinner devices that last longer will serve them well when they enter into the wearables market where larger devices to accompany larger batteries won't be acceptable.

Sounds awesome! Sadly, despite all the "black magic" you're talking about, the iPhone still has sub par battery life compared to all these "OEMs Android" devices, and Lumia phones. Honest iPhone users know it's true and they know Apple must do something about this problem (Apple boards are full of people complaining about the poor battery life of their iPhone)

And you're talking to someone who is happy with his MacBook Pro, and has had many iPhones in the past (3G, 4, 4S, 5), before switching to the Note 3. I'm not an hater... I'm just someone who tried iPhones and Android phones, and noticed his Note 3 had crazy battery life compared to his "old" iPhone 5
 
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Do you realize that your napkin calculation assumes that the screen power use would represent exactly 100% of the entire power consumption of the device?

All other components beyond the screen would use the same or less power than their current counterparts, theoretically.
 
I had to turn 4G off, otherwise I would literally see the battery dropping every minute, amazing...

God bless the down vote button!
 
Same ole same ole then, twice a day charging if you actually use it.

sounds like your phone is broken -- i get 24 hours+ on a charge, and i use my phone throughout the day for surfing, facebook, a few calls, a few other apps, and plenty of texting. i consider that actually using it.
 
1810 mAh battery is disappointing if its true. So basically it will have the same battery life as the 5S. The only reason it has been bumped up a bit is to power the bigger screen.
 
And you're implying that the only thing in the device that uses battery is the screen meaning there is no actual battery life improvement?
I'm saying a bigger screen needs a bigger battery to maintain the same levels of battery usage times. The increase in mAh might only be for the increase in screen size. A 1810 mAh battery in the 4.7" iPhone 6 might give us the same battery life as our current iPhones (5 to 7 hours depending how you use it)
 
And you're implying that the only thing in the device that uses battery is the screen meaning there is no actual battery life improvement?

The screen is the one that draws mostly all the power. Combine this with playing a 3D game and well there goes your battery. So basically all the extra mAh that the battery has will go to the screen and everything else will be the same as the 5S in terms of battery life.

@Prof. beat me to it lol
 
Thin enough already

I wish they would stop making the damn thing thinner, and instead focus on improving battery life. It's already thin enough that it's difficult to hold, and most will thicken it back up again with a case anyway.
 
I'm sure Apple will be utterly devastated to lose you as a customer. Really, you might just cause poor ol' Tim Cook's heart to give out from depression.

Im pretty sure theyll do just fine ;)

Was I ranting about anything? I think not. Its just that I am a heavy user and I need my phone to last all day despite my heavy usage. my 5 does not.
 
Well this battery is not really a confirmed fact, and we don't yet know if the new processor will have some sort of new tricks enabling it to manage power better than the current generation.
But the Apple obsession with thinness above all else is concerning.
So I won't be ordering without seeing some reviews of the new device; battery life has to be better than now for me.
Up until now I've always ordered the new iPhone models (with one exception) as soon as they were available to order online.
 
This is a bit overly simplified.

There is more to light transmission than just the index of refraction. This link: http://en.m.wikipedia.org/wiki/Transparency_and_translucency, isn't too bad in explaining some of the material characteristics that impact opacity.

In any event it is possible to treat, alloy if you will, Sapphire to increase light transmission. Considering all the factors involved it would probably be best to see what Apple actually ships.

The current screen is not glass, it is Gorilla glass, which is something entirely different. It was reported elsewhere that Sapphire is actually more transparent than Gorilla Glass and hence less power is necessary to produce the same screen brightness.

edit: I see I was wrong. Actually Sapphire has a higher refractive index. I eat my words on that part. It is though suggested that Sapphire might require a less thick screen which could compensate for the lower transparency.
There is more to it then just looking at the refractive index number. The refractive index is related to material desnity but there are electro optical behaviors that impact transmission also.

It might be better to look at sites that have a little more strength when it comes to understanding optics and materials. Until we know what Apple is actually shipping it is at best guess work to say the screen will transmit less light then one based on Gorila Glass. We need to know things like how thick is the window, is it treated in any way, is it a lamination and etc.
 
Well this battery is not really a confirmed fact, and we don't yet know if the new processor will have some sort of new tricks enabling it to manage power better than the current generation.

the screen is ehat needs those tricks.

most usage is with the screen on (phone calls and music are about the only things I can think of that negate that statement). Currently the screen is by far the most power hungry component.
 
To be honest, the fact apple are still chasing thinness is better than them putting design second to specs.

After all, one of the key aspects that sets Apple apart is that it isn't designers putting components in a pretty box - the designs come first, and are linked to how a product works. This hasn't changed in the Tim Cook era, and no one seems to care.
 
This should be obvious, there are too many "don't knows" to make a judgement on screen power usage. We don't know the technology used in the screen, we don't know the pixel size we know nothing about the backlight technique nor the LEDs actually used in the back light. Just consider how much better LEDs get every year and you have one big factor right there.

The screen is over 15% larger, so why wouldn't we expect it to increase power draw by that much? IPhone users haven't had battery info until iOS 8beta so maybe most are unaware that the screen uses wayyy more battery than anything else. I think this leak is a fake.
True the screen uses lots of power which also makes it one point where modest tweaks in performance can have a big pay off. However this doesn't mean that the rest of the system isn't important, especially considering that most iPhones run with the screen off not on.

As for the leak being fake - nothing you relate to above has any impact on the leak.
 
Just when I though society stopped comparing megapixels and gigahertz, and focused on results rather than specs. :rolleyes:

Historically, battery capacity has given us a great estimate as to what battery life will look like on iOS products. More-so than any other spec. Battery life is also the more tangible spec for most consumers because they can look at their watch and see how fast their phone died.
 
how does this article have -1 vote? i want to be able to down vote again!
 

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So that means roughly 20% longer battery life but still need to be charged every night.

Carry on folks. Nothing to see here.

A lot of people charge their phones at night while they're asleep. That's not too big of a deal.

If you don't want to charge every night... you'd need a phone that lasts two full days. Meaning you only need to charge it every other night.

You'd have to go to bed with at least 60% battery left in order to make it through the next day. Otherwise... you'll be charging mid-day.

But wait... what's wrong with charging every night? Don't you want to wake up with 100% battery?
 
first off, i have a iphone 5s, so keep moving on that one buddy. would you like me to post pointless pictures of all my iphones as well?

2nd. where do you even see me using a android phone as a benchmark or any sort of bench setting. i'm using REALITY as benchmark, the fact that i have to go power outlet hunting at 5pm because my phone can't keep up with my schedule should warrant enough of a reason to have this conversation.
Actually no, your schedule has nothing to do with this problem. Some people will use their devices more intensely than others, that is NOT Apples fault and as such has nothing to do with the conversation.

It makes about as much sense as the guy that buys a 1 ton truck when he would be better off hauling 3 tons at a time, complaining about his one tine truck not having the right capacity.
and 3rd, IT IS NOT A FACT, how can you even compare your messy screenshot of your setting, which is easy as hell to manipulate, to anatech and other review website's benchmarks' graphs, polls. and numerous data output charts and manage it to relate to your screenshot, and calling it a fact.

anandtech, gsmarena, and other credible sources
Anandtech has never been a credible source so right there you go off the tracks.
=
graphs
data charts
controlled testing environment with no random variables.

you
=
a screenshot of your setting.

LOLWUT?!

You dismiss the fact that reasonable intelligent use of a device can impact its battery life. This is very important in any discussion about battery life. Simple things like the difference between a person that keeps the screen powered up during a phone call can result in drastically different run times than one that doesn't.
 
I hope Apple targeted 50% increase in battery life. The A8 better have some amazing power-saving kung-fu.
 
All other components beyond the screen would use the same or less power than their current counterparts, theoretically.

Right, but it would be incorrect under this assumption to assume that overall device power consumption would increase by the same increase in screen size. You still have to multiply that increase in size by whatever percentage of power consumption the screen represents.

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how does this article have -1 vote? i want to be able to down vote again!

I noticed also a guy who posted a comment about leaving the iPhone for an android device also had a -1 score. Do some admins still have down vote capability?
 
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