I agree wi-fi and bluetooth can drain your battery, but I don't think they're the two biggest sources of battery drainage. I think screen brightness would be by far the largest drain on your battery, so that's the first thing I'd recommend lowering. I have auto brightness turned off on my iPhone, and I have brightness set to 10%. This is still bright enough so when I ask a sighted person for help, they can still see the screen.

I'm not sure where all of these would rank, but automatically fetching data, receiving push notifications and using location services would also be pretty high up on the list of things that drain your battery the most. there are many such articles on tips to control the battery drain on your phone, but one such article is at http://www.businessinsider.com/better-iphone-battery-life-2013-5

Finally, remember that your iPhone and it's battery are meant to be used. Turn off those features you don't need or use, but don't cripple the functionality of your device by slavishly turning off everything that consumes some battery.

On 02/09/2014 11:29 AM, Alan Paganelli wrote:
The two biggest drains on the iPhone are the Bluetooth radio and WI_FI..  It's 
easy to tell Siri, turn bluetooth off and she'll say I turned Bluetooth off.  
Do the same with WI_FI.  Those are the two biggest battery drains.  So if you 
have no ear peace connected to Bluetooth and your away from your home network, 
you don't need the WI_FI either.  And, it can quickly be turned back on again 
when need be.

HTH


Alan

Sent from my iPad Air

On Feb 8, 2014, at 3:10 PM, Adrienne Sinclair Chalmers 
<chalmer...@googlemail.com> wrote:

    Hi

Of course it's true that some apps use  more power than others, but if a phone 
is draining, then the most obvious explanation is that one app or another is 
using the power and it's just an easy thing to eliminate.

In Mavericks, the battery menu shows you which apps are using significant 
amounts of power. If there is a similar thing in IOS7, I haven't found it yet.

Reducing screen brightness is a really good one too. I always thought it 
counter-intuitive that the screen curtain didn't reduce power use, but them's 
the breaks.

I have absolutely no authority to back this up, but I am convinced I noticed a 
reduction in power usage on my 5s after I locked the screen orientation.

Best

Adrienne

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