Auto-brightness decrease battery life?

[impulse462]

This may seem like a trivial question but i really don't know the answer to it.

I've researched this some on the net and ive been getting mixed messages. Does enabling auto brightness cause the phones battery to drain more quickly since its using the sensors? I know setting the phone to low brightness the entire time would give the maximum amount of battery but thats pretty annoying and its sunny here in michigan and i would really not like to squint at my phones screen everytime I'm outside

Any thoughts?

 

[ian.maffett]

I have played with that setting a bit and didn't notice any variance in battery life. Again, nothing noticeable that is. One thing that DID make me LOL was PUSH. If you turn off push you'll nearly double your battery life (or so it would seem). I don't read mail until I go into mail so I don't need my phone constantly checking for mail while in my pocket... If you try it for a week I promise you'll be shocked.

 

[Roy Hobbs]

I have played with that setting a bit and didn't notice any variance in battery life. Again, nothing noticeable that is. One thing that DID make me LOL was PUSH. If you turn off push you'll nearly double your battery life (or so it would seem). I don't read mail until I go into mail so I don't need my phone constantly checking for mail while in my pocket... If you try it for a week I promise you'll be shocked.

PUSH doesnt constanly check for emails, thats the point of Push. Push emails is much better on my battery life than having the Mail app check every 15 minutes

 

[ian.maffett]

Well, when I disabled push (I already had all my email fetches set to manual) I no longer had the mail tag out of pocket and had to wait for the phone to check my mail when when I opened Mail application. Moreover, that was the only setting I made on both my phone and my co-workers to dramatically improve battery life. Regardless, it's a sacrifice especially since 3.0 hinges a lot of improvement on push.

--

Here is a snippet from: http://www.wirelessforums.org/alt-cellular-attws/iphone-battery-life-vs-push-47414.html

"Under ALL circumstances:
[1] The BEST battery life setting is to have Push turned off, and Fetch
set to Manually.

[2] The SECOND BEST battery life setting is to have Push turned off, and
Fetch set to Hourly.

[3] The THIRD BEST battery life setting is to have Push turned off, and
Fetch set to Every 30 Minutes.

The subsequent battery life ranking depend upon which of the following
three situations applies to you. You need to test for yourself. Your
situation may differ from your friends' situation.

Situation A:
[4a] The WORST battery life setting is to have Fetch set to Every 15
Minutes. The setting of Push is irrelevant.

Situation B:
[4b] The FOURTH best battery life setting, very close to the THIRD best
battery life setting, is to have Push turned on, and Fetch set to
Manually, Hourly, or Every 30 Minutes (I recommend Manually).

[5b] The FIFTH best battery life setting is to have Push turned off, and
Fetch set to Every 15 Minutes.

[5c] The WORST battery life setting is to have Push turned on, and
Fetch set to Every 15 Minutes. You will not get mail any faster
than you would using [4b].
"

 

[impulse462]

nice then i'll just leave auto-brightness on with 1/2 brightness.

and for the record i already had push off