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Very disappointing battery life

Alvi

Alvi

macrumors 65816
Original poster
Oct 31, 2008
1,210
311
Mars
Hi, i have a 32GB iPhone 3GS, the battery is pretty bad and i bought it like the 15th of December 2009.
I am familiar with Claimed battery life vs. Real one, i usually expect 3 hours of battery life if they claim 6, but this is less than half of their claim.

I now turn off Push notifications, email check and those kinds of things, i have brightness at 10-25% without the auto brightness feature
If i have auto brightness on, push notifications only for an app called "boxcar" and mail checking every 30 mins it lasts me one day from 8AM to 12PM probably using it to read mails, open a website on wi-fi and other stuff for maximum 30-60 a day, at 12PM when i go to sleep the iPhone still has 5-10% which you can literally see how 10 drops to 9, 8, 7 in a few minutes if you browse on wi-fi, i almost feel that if i browse the web the battery percentage drops almost per minute or every few minutes

Apple Claims:
Talk time:
Up to 5 hours on 3G
Up to 12 hours on 2G
Standby time: Up to 277 hours

Internet use:
Up to 5 hours on 3G
Up to 9 hours on Wi-Fi
Video playback: Up to 10 hours
Audio playback: Up to 30 hours
Click to expand...

My iPhone
Talk time:
Up to 2:30 hours on 3G
Up to 3 hours on 2G
Standby time: Up to 60 hours (untouched)

Internet use:
Up to 2 hours on 3G
Up to 4 hours on Wi-Fi
Video playback: Up to 4 hours
Audio playback: Up to 10 hours
Click to expand...

Is this normal?
 
Consultant said:
Turn bluetooth off.
Click to expand...

He didn't say he had bluetooth on, but yes, turn if off if you have it on.

You should also turn of wifi, if you're not using it.

One thing that can really affect battery life that is often overlooked is the signal you are getting for 3G and EDGE (2G). If your phone is constantly having to search to get a good signal or your signal is lower that 3 bars, then your battery life will seriously degrade over time.

If none of that applies, I'd take it back, since you have a defective battery.
 
-aggie- said:
He didn't say he had bluetooth on, but yes, turn if off if you have it on.

You should also turn of wifi, if you're not using it.

One thing that can really affect battery life that is often overlooked is the signal you are getting for 3G and EDGE (2G). If your phone is constantly having to search to get a good signal or your signal is lower that 3 bars, then your battery life will seriously degrade over time.

If none of that applies, I'd take it back, since you have a defective battery.
Click to expand...

I don't really use 3G data, just Wi-Fi, should i turn off 3G or does have another kind of voice/text use?
 
Your results are indeed pretty low compared to Apple's claims. Even though I have a 2G i'll try to help if I can... Try a process manager app like SysInfoPlus or Mocha iSys to see if anything unusual is running in the background. Also, since you've done your tests with battery time, try the idle time without a sim card and then with wifi off, see how the results compare to when you got a sim inserted and wifi on.
 
s0crates said:
Your results are indeed pretty low compared to Apple's claims. Even though I have a 2G i'll try to help if I can... Try a process manager app like SysInfoPlus or Mocha iSys to see if anything unusual is running in the background. Also, since you've done your tests with battery time, try the idle time without a sim card and then with wifi off, see how the results compare to when you got a sim inserted and wifi on.
Click to expand...

I didn't jailbreak my iPhone, i better call apple
 
s0crates said:
Your results are indeed pretty low compared to Apple's claims. Even though I have a 2G i'll try to help if I can... Try a process manager app like SysInfoPlus or Mocha iSys to see if anything unusual is running in the background. Also, since you've done your tests with battery time, try the idle time without a sim card and then with wifi off, see how the results compare to when you got a sim inserted and wifi on.
Click to expand...

I didn't jailbreak my iPhone, i better call apple
 
-aggie- said:
He didn't say he had bluetooth on, but yes, turn if off if you have it on.

You should also turn of wifi, if you're not using it.
Click to expand...

Having Wifi on doesn't make that much of a difference. Actually the battery stats on Apple's website are with Wifi on.

OP, try this. Charge your iPhone to 100%, turn 3G, bluetooth, push, fetch, push notifications off. Reboot your iPhone and leave it overnight. Then see how much the battery drained and post the results.
 
I'm also have a 32gig 3gs.. But my battery lasts alot better..i leave push, Bluetooth, wifi, and 3g on all day.. I can't remember I even have went into settings to change anything.. My phone lasts easily 14-15 hours.. Im a heavy text user. Atleast 300 texts a day. As well as heavy Internet user.. Something is wrong with your battery. Take your device up to apple. And they can check your battery. If something is wrong they will replace your device
 
gigapocket1 said:
I'm also have a 32gig 3gs.. But my battery lasts alot better..i leave push, Bluetooth, wifi, and 3g on all day.. I can't remember I even have went into settings to change anything.. My phone lasts easily 14-15 hours.. Im a heavy text user. Atleast 300 texts a day. As well as heavy Internet user.. Something is wrong with your battery. Take your device up to apple. And they can check your battery. If something is wrong they will replace your device
Click to expand...

wow, than i better talk to apple
 
I turned off 3G which i almost don't use and i had some pretty big improvement on my battery life
 
Charged my 3G upto full capacity.left it switched off overnight and turned back on the following evening and more than half the battery life is gone.Don,t know why this is as the phone was totally switched off:confused:
 
keep the 3g off, the 3g really takes alot out on the battery, mine lasts around 15-20 hours on stand-by and 4-5 hours of usage, 3g really kills my iphone 3g,
 
stormchaser said:
Charged my 3G upto full capacity.left it switched off overnight and turned back on the following evening and more than half the battery life is gone.Don,t know why this is as the phone was totally switched off:confused:
Click to expand...

When was the last time you calibrated your battery? Even so, it sounds like your battery may be faulty.
 
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