Poll: Battery Life improvement w/ 2.1

[aforty]

I get about an extra 6-8 hours of standby time with what I believe to be the same amount of usage over roughly 32 hours.

It was fine for me before (I never really complained) and now it's almost fantastic for everything the iPhone does.

 

[Cinemagic]

Here's the thing with that. It's been common knowledge that it force quits the application in focus, but then people started saying that it kills ALL application. So yesterday I put it to the test by having the iPod app play some music, then I minimized it and went back to the home screen, music still playing, and opened Safari. Then I held the home button for 10 seconds which terminated Safari, and the home screen appeared, but the music was still playing in the background. If you do the same when the iPod app is open on your screen, the music stops abruptly and the home screen appears. Try it.

You're right. However, there is something else I discovered as well. I have a stock program that logs in to Ameritrade when started. If I simply hit the home key to exit (not the 10 second push, but a simple momentary push) then when I hit the icon again, I have to log i all over again. Same thing with apps that need to connect to a specific IP address (through WiF). Pandora stops playing when I hit the home key momentarily. iPod does indeed continue playing when exiting.

It appears to me that added apps will indeed shut down when the home key is momentarily pushed. So just what the Home key pressing for 10 seconds actually does that's different from momentarily pressing the Home key, I really don't know.

 

[phytonix]

My battery life has greatly improved I would say. I bever got over 7 hours of use on my 1st gen iPhone before. And that's 3D gaming, wifi and EDGE web surfing, email, calendar management, AP News, and over 2 hours of calling.

Sync and backup is significantly faster.
Installing softwares is also significantly faster.
Safari stability is about the same. I get crash sometimes.
Many things seems snappier. Keyboard definitely is and also contacts.

So it is a great update!

 

[Cyclone Chris]

A slight lead on the 1 hour + I'm very curious to find out what apple changed in power management.

 

[needthephone]

sorry much worse battery life, I'm surfing the web and the battery is dying before my eyes. Also signal says it's better by more bars but downloadvtests show far worse.

Also overnight my battery dies whereas before it was fine.

Whats going on?

 

[dukefan]

They improved battery life by not fetching email when the phone is on battery and asleep. Sad.

 

[sibruk]

They improved battery life by not fetching email when the phone is on battery and asleep. Sad.

That's not true. Mine fetches fine.

 

[Mikey B]

i'm not seeing much of a difference. i'm sure i would if i switched to EDGE, shut off WIFI, turned off Location Services, set all mail to manual Fetch, and kept my display as dim as possible, but since those are the main features of the phone, i guess i'm going to have to live with juicing it up throughout the day.

 

[sibruk]

Book an appointment at the iPod Bar at your closest Apple Store if you are still having battery problems after 2.1. The worst that can happen is that they'll tell you which settings need to be changed in order to conserve battery (you can argue your case about it verging on being unusable with everything turned off). The best that will happen is that, like me, you'll walk out of the store with a new iPhone 3G.

I had serious battery problems with my first 3G, and the staff in the Apple Store in London said that it was a known problem with several batches of the early production run. Dud batteries do happen too!

 

[wildcardd]

Over the past few days it seems that they improved the standby battery life. I rarely used my phone on sunday and had still a near full battery at the end of the day.

 

[uberzete]

I'm actually rather impressed by the increase in battery life on my iPhone. I rarely run 3G (only when I'm surfing is it on) and I have bluetooth off. I was running a bunch of apps and the camera function as well as e-mailing photos over edge and I had gone about 1 day and 6 hours according to my usage stats and i hadn't hit the first "20%" warning.

 

[Cyclone Chris]

I have all my stuff turned on, and usually Fetch email myself on average about 10 times a day. No 3G in my area, however I keep that setting turned on anyway. I'm charging every other day now, as it used to be every night.

 

[jecapaga]

Huge increase in standby battery life. I'd say about 40% better/longer if I could put a number on it.

 

[pj rage]

So far my battery seems considerably worse. I am jailbroken though. I don't know if there is some problem related to that or not.

The phone is working great, but after being on standby for 1 hour, airplane mode for 4 hours with 30 mins ipod use, edge for 1.5 hours - downloaded one web page and 18kb from Cydia - otherwise just on standby, and then airplane mode again for 3 hours, it is now at 75%. Normally after this type of usage, which is pretty typical for my work day, I would see around 88% or so. We'll see how it pans out in the long run, though.

So to sum up my usage for easier reading:

Regular standby mode, mostly edge signal, some 3g - 2.5 hours
Airplane mode standby - 7 hours
iPod use - 30 minutes
Edge data use - ~8 minutes

Used: 25% battery, expected to use around 12% battery. I've had fluke days like this before too though on 2.0.2 where it's about this low unexpectedly when most other days with virtually the same usage it's the 88% or so that I expect, so this could be a fluke day I suppose. The only thing I know "for sure" is that based on the information so far, it's definitely not any better than before.

(sidenote) I can never check my "usage" stats. It's something related to jailbreaking I think, but they always just say --. They'll work for a little while, then something happens (not sure what) and they both just say --. (This happened on 2.0.2 and now also 2.1).

 

[rotobadger]

(sidenote) I can never check my "usage" stats. It's something related to jailbreaking I think, but they always just say --. They'll work for a little while, then something happens (not sure what) and they both just say --. (This happened on 2.0.2 and now also 2.1).

I have the same problem but I think I may have figured it out. Whenever you install a new program (Installer) it does a reset of the phone. This will wipe your usage stats until another full recharge.

 

[Amorpheus]

Standby significantly improved. Also the phone doesn't get as warm when using 3G much.

 

[Wetworks]

Huge increase in standby battery life. I'd say about 40% better/longer if I could put a number on it.

I'm inclined to agree. I'm at roughly 1/3 battery with a little over 2 hours usage, 1 day, 21 hours standby with 3G (EDGE area right now), location services and bluetooth all on. So, maybe this translates to about 1 hour extra usage time?

 

[mavis]

Wirelessly posted (iPhone 3G (16GB, 2.1 PWNed): Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_1 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5F136 Safari/525.20)

Standby significantly improved. Also the phone doesn't get as warm when using 3G much.

I have mine on 3G at all times (that's all we've got over here) and I'm find mine still gets pretty warm. It doesn't really bother me, but I wish it was cool to the touch.