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Old Aug 23, 2010, 06:44 AM   #1
aleni
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great battery life with cellular data turned off

i just notice when i'm at home, i only use wifi, so i disable 3G but the edge symbol is still appear, i don't need it and i just found out the setting to turn it off totally.

i didn't realize that the setting is there. is it iOS4 only?

my iPhone 4 has a better battery life than before, i can touch 7-7.30 hours of quite heavy usage including playing 3D games like gangstar and assasin creed.

it can reach to 8.5-9hours without playing 3d games but heavy use on youtube, browsing and listening to music.

my setting is brightness 60% with auto brightness turned on, 3G off, cellular data off, wifi on, location service on, notification on, mail set to fetch hourly.

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Old Aug 23, 2010, 06:51 AM   #2
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With cellular data off you do know you cant receive MMS right?
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Old Aug 23, 2010, 07:04 AM   #3
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Well, it is pretty well-known that 3G networks use more power than their 2G brethren.

Nothing new here.

Edge is a 2G technology, so you are getting edge data at least (if you hadn't turned off Cellular data).
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Old Aug 23, 2010, 07:19 AM   #4
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I have noticed the same thing. I knew that it would save batt life but I wasn't expecting 6 hours of usage and still 50% left. I notice when I'm in an area that has bad reception, batt life decreases significantly. Should it make a difference? Guess it needs more power to transmit cellular data with low reception??
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Old Aug 23, 2010, 07:44 AM   #5
Chris Blount
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You will find that even with 3G and data turned on, battery life will still be pretty good at home because you are using wifi which uses less power anyway.

I did what you are doing but it got to be a pain after a while and now I just leave everthing turned on. It's much easier to throw the phone onto a charger rather than having to remember to turn things on and off.
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Old Aug 23, 2010, 08:00 AM   #6
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This isn't new. Also if your IPhone has to search for a signal constantly that uses a lot of battery.
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Old Aug 23, 2010, 08:14 AM   #7
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Originally Posted by esadb View Post
With cellular data off you do know you cant receive MMS right?
Or sms..
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Old Aug 23, 2010, 08:33 AM   #8
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Cool

And my car doesn't use much fuel when I turn off the engine... What's the point of owning a smartphone without data?
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Old Aug 23, 2010, 08:40 AM   #9
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Or sms..
Yes you can. SMS works.
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Old Aug 23, 2010, 09:24 AM   #10
aleni
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who the hell use mms these days??

about sms, it's working just fine.
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Old Aug 23, 2010, 09:27 AM   #11
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And my car doesn't use much fuel when I turn off the engine... What's the point of owning a smartphone without data?
i said when i was at home where i don't need data from cellular because i use wifi, which is faster.

i turned it back on when i'm in area that has no wifi.
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Old Aug 23, 2010, 09:33 AM   #12
Carl G35c
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you get even better battery time if you turn everything off
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Old Aug 23, 2010, 09:44 AM   #13
aleni
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you get even better battery time if you turn everything off
ease up man, do you turn on your car's lamp at noon?
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Old Aug 23, 2010, 10:33 AM   #14
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ease up man, do you turn on your car's lamp at noon?
If im in a parking garage I might.
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Old Aug 23, 2010, 10:35 AM   #15
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ease up man, do you turn on your car's lamp at noon?
Having your headlights on during the day reduces the likelihood of a crash happening.
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Old Aug 23, 2010, 10:48 AM   #16
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Yep, and when I turn everything off including my iPhone 4 I can last for days on a single charge, however I can not:

Make a call
use it for an ipod
send MMS or SMS
can't take pictures or video

Basically I am restriceted to doing nothing at all

No thanks, I will carry a charger around and use my iPhone 4 as Steve told me I should just use it and have fun
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Old Aug 23, 2010, 02:26 PM   #17
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who the hell use mms these days??

about sms, it's working just fine.
My mom uses mms because she has a flip phone. Not everyone emails pics from one phone to another phone, it's easier using mms. Quick and efficient.
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Old Aug 23, 2010, 03:06 PM   #18
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Old Aug 23, 2010, 07:19 PM   #19
aleni
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If im in a parking garage I might.
if i was outside my home and have no wifi around, i turned the cellular data on. does it
make any difference than your opinion?
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