[nyc_rock]

Engadget claimed 36 hours on a single charge with moderate usage. What is everyone seing? this is a huge sellng point for me and I am wondering if its performing as advertised. Sound off!!

[wsm23#IM]

I recieved mine yesterday and took it home and it charged while I synced it with Itunes. This was around 5 o'clock, I played around with it for most of the night and did not charge it over night and this morning I am probably sitting around 80% charge left. Battery life seems to be much better.

[dudrsnacks]

I fully charged mine and took it off the charger around 3pm yesterday. I have been using the he'll out of it in an attempt to run the battery down. I didn't charge it overnight as well as leaving Wi-Fi on an apps running to try to kill the battery some more. It's 8:30am now and I'm at 40%. That's pretty impressive in my book. I'm completely satisfied with battery performance so far.

[RIPNHL2005]

WHat apps did you keep running and how do you know whats running and whats not so I dont end up leaving apps running when I dont want to?
There isnt any indicator to show whats running versus what you've opened recently and I'm a bit confused over it.

[Firestarter]

I'm wondering how the battery life compares with the 3GS, with WiFi turned on. Anyone got any good comparisons for that, please?! It seems like my 3GS is draining completely every day, since installing iOS4.

[Sarcone]

I fully charged mine around 11 am yesterday and played with it most of the day, made several phone calls, left wifi on, and only go down to about 56%. Way better than my 3g.

[Firestarter]

nice, does the phone feel heavier, lighter, or about the same?

[slalomskie]

Engadget claimed 36 hours on a single charge with moderate usage. What is everyone seing? this is a huge sellng point for me and I am wondering if its performing as advertised. Sound off!!

This is because you can't make phone calls with the phone holding issue. Thus increasing battery life

[petaf]

OMG!!!! Reason enough to buy one!

[ghostface147]

It seems to be the same for me. I haven't noticed a decrease or increase. Today will be the first full day of testing.

[dudrsnacks]

Well, now that I think about it I don't know if any of the apps were actually "running" or just paused. I had at least 20+ apps in my apps tray. I don't think that stuff like the messaging and settings apps were running, but I did have multiple web sites opened as well as a game and some other apps. I will do more precise testing and get back to you.

[theogt]

I had my phone fully charged at about 3:00 yesterday. I took it off and used it very heavily throughout the rest of the day and evening. I know have about half my batter life left.

[Joe McG]

Last night was the first full night on the wall charger so today is the maiden voyage for the battery. Will update later tonight...

[Jellotime91]

@slalomskie
The reception issue is firmware related, it happens on iPhone 3G and 3GS as well with 4.0 installed.

@dudrsnacks
Apps are not running in the background unless they are playing audio, voip calling, gps, task-completion etc etc...

Any app that isn't doing one of the backgrounding APIs isn't running, it's in saved state and really doesn't effect the battery or speed.

[stphnman20]

You guys have to remember that since this is a new phone the battery performance is awesome! But after a while it'll get decrease. I remember my 3G would go a day and half with out a charge. Now, I have to charge it by afternoon.. But hey, you never know since it a larger battery.

[wsm23#IM]

nice, does the phone feel heavier, lighter, or about the same?

Seems slighlty heavier to me, but has a good feel in your hand.

[morgantm89]

Seems slighlty heavier to me, but has a good feel in your hand.

I agree, it is heavier but it feels better. More solid

[bconley007]

this is my first iphone so i dont have any comparison to any other iphone, but i have no complaints about the battery

[BPGator37]

Earlier in the week I think Google Sync was having some issues which caused some major batter depletion. Im still testing. I have my Personal Gmail set up as exchange (contacts,Cal, mail) and work email, google apps acct, set up as IMAP. Battery has definitely been better than my 3G.

[Hack-My-i]

Battery life is a tad bit better but dont expect anything more...atleast from my view point

[OKCChuck]

I use my phone A LOT. I use it 8 hrs a day while at work, so my battery performance is just slightly better. Still will purchase a Mophie for it when they develop one.

[Redshirt]

36 hours sounds excessively high to me (unless they weren't doing anything on it. We'll see.). I think it'll take a few cycles before we find out the real time. Usually it takes the software a few full drain/full charge cycles to best estimate battery life.

For my 3G, it used to die around 7 to 8 hours after a full day of playing MP3 podcasts for me (less if I played video podcasts). The iPhone 4 needs to exceed that.

[lungho]

My first full day of using a fully charged 4. I used my phone a little more than normal today. I streamed quite a bit of Pandora over 3G today, played a few games, and used productivity apps more than I usually do. This phone was in my hand the entire day. I pushed it really hard and didn't recharge once.

It's now a little after 7pm CST and I have 35% battery left. My 3g would have been dead by noon. I am very pleased with the battery life.

[iVenom]

funny i made a post like this at 12am but not a look? i guess i need a better title
http://forum.tipb.com/showthread.php...42#post1590042

if you post a pic like the one in "my" post we can kinda see how well it did. i can say i used all my apps for 20 hours with no proof you know

[Hack-My-i]

ok i just got off the i4 from a 2hr convo and 70% battery left, not bad at all!