4.0.1 = better battery life

[jameskk]

Anyone else notice better battery life since updating to 4.0.1? I think it might be because it is connecting properly to my Exchange account now instead of constantly trying to connect or something. Anyway, I can tell a difference. Yesterday I had 16+ hours standby and 6 hrs. usage with 25% still left. iPhone 4. Nice

 

[jmccray]

I am actually getting much better battery life as well. I thought it was just me.

 

[Givmeabrek]

Might want to say what phone you have. Doesn't seem likely it would change anything.

 

[bluenoise]

I can't confirm the 4.0.1 as I just installed it, but I have been very happy with the battery life on the iPhone 4, especially compared to my 3G.

I grabbed this last Sunday:

 

[bholaladka]

same here, better battery life.

 

[Outrigger]

I believe its called the placebo effect. After every single update, there are ppl claiming better battery effect even though the update has nothing to do with power management.

 

[bholaladka]

I can't confirm the 4.0.1 as I just installed it, but I have been very happy with the battery life on the iPhone 4, especially compared to my 3G.

I grabbed this last Sunday:

This looks unreal. Do you use 3g? I get a max of 6 hours over 3 G. Did you disable the 3g during the day?

 

[bluenoise]

This looks unreal. Do you use 3g? I get a max of 6 hours over 3 G. Did you disable the 3g during the day?

No, all features (Location, 3G, Wifi, Bluetooth) are enabled. Much of the usage, though, was iPod. I was doing work around the house all day and had the iPod playing. A chunk of it was phone calls and some web surfing, too.

 

[jplusc]

In general the IP4 battery life is amazing.

 

[ntrigue]

You provided a very reasonable explanation. I'd be interested to hear others with Exchange services chime-in.

 

[TMar]

These phones should never die. Every time there is an update the battery get's better. You would think at this point they would just draw energy from subspace.

 

[ARF900]

I am also getting better battery life. It might just be because the battery wasnt fully "stretched out" out of the box though.

 

[Chunkycat]

This looks unreal. Do you use 3g? I get a max of 6 hours over 3 G. Did you disable the 3g during the day?

I still have my iPhone 4 on iOS 4.0 and I have similar data:
Since last charge:
Usage: 6h. 31min.
Standby: 17h. 33min.
Call time:
Current period: 13h. 51mins.
Lifetime: 13h. 51min.

And I still have 21% left.
Sorry, I don't know how to post a screenshot here.

I always have 3g on and I play quite a bit.

 

[fsck-y dingo]

Mine seems about the same.

Although, I did notice one strange occurrence. In the time the phone was updating to 4.0.1 its battery was charged back up to 92% from, I think around 78%. When everything was finished I ejected the phone from iTunes and noticed the usage was showing 1 minute under the "Time since last full charge" section.

After that I plugged it into the wall, switched on airplane mode and let it truly fully charge. I'm now in the process of fully discharging to allow for a battery calibration. I've only calibrated once since getting it on June 23rd so I guess it's about time.

Anyone else have that happen to their phone?