This is really more or less a fallacy. If you store a certain amount of charge in the battery it's in there. Just because it isn't full doesn't mean the electrons aren't still in there. It's like putting 5 gallons of gas in the tank, which might fill it or might not. It's still going to keep the motor running for 5 gallons worth of time.
Now I'm sure there are some electrochemistry things going on that mess with the times a little bit but I doubt they matter enough to make any real world difference.
Who is asking for this ultra-thin phone I wonder? Not me.
Apple should really get their priorities straight.
Look at all the hype with the Moto Razr phones (either the original ones or the current models). MUCH of that had to do with the thin, sleek form-factor.
If you're willing to carry around a big, heavy "brick" of a phone, you can have all the battery life you need. But people generally don't want that (and it really makes more sense to just sell it in the form of a big battery case, for those who DO want it).
I'm not saying Apple shouldn't keep long battery life as an important goal .... but just saying I consider it a step forward if the iPhone 6 is slimmer than my 5s and still has the same or slightly better battery life.
This right here! Bigger batteries take longer to charge it's annoying! I want the new iphone to be like my macbook air which takes only two hours to fully charge.
Look at your apps closely. Mine was draining battery life like crazy for a brief time. I isolated a few apps that constantly ran GPS for no useful reason and turned off the GPS.
Settings > Privacy > Location Services > System Services
Also let's not forget that thinner will back it structurally more vulnerable. I don't get this obsession with thinnest other than a marketing buzz
There is no way in the world that I can go a whole day on a full single charge in the morning. Most people I know in NYC no matter what their phone is cannot go a whole day without trying to get some charge here or there. Power users vs casual. That's all it is.
Don't worry guys... this isn't the whole story...
yes capacity maybe modestly improved... but the software tweaks they will implement in the ios 8 gold master will dramatically improve battery life.
It's a guaranteed no buy from me if it isn't an improvement on the 5S. So sick to death of it lasting 6 hours and charging it twice a day. Complete waste of time moving to a bigger screen with a similar capacity. And no, I don't want to stick a 180g £80 juice pack on my phone just to get it through the afternoon.
....and it also has one of the lowest battery capacities.