Q: iPhone 5 battery life is way worse than iPhone 4

I am on my second iphone 5.  I acquired the first one thru AT&T and returned it because of horrible battery life.  I just came back from Apple and they ran a diagnostics test and everything seemed fine.  They took my phone to the back to install some "software" and returned my phone completely reset.  The Genius stated that they just received some info on how Passbook is partly responsible for excess battery drain.  I found a passbook setting under the SETTINGS>GENERAL>CELLULAR>PASSBOOK UPDATES and turned it off.  I will update here whether or not this helped. 

I do hear that the Google Nexus phone is a great sub for iPhone users.....

Have you considered trying to calibrate your battery? I was getting the same results as you did before i calibrated it. Try killing it then from 100- till it shuts off. then fully charge it. Then drop it to about 20 then plug it in charger. NOW here is something you have to know. When you plug it in the charger, if the percent dramatically increase by like 3-4% take it off charger, and drop it to 20 again. Plug it in the charger, and if it increases again do the same thing over and over. Till when you charge it it shows 20, then charge it to 100. Then do the same thing again, drop it too 20% or even lower just not below 10%. and see if when you charge it, the % increase rather then it shows the correct percentage before you charge it. The percentage should be close to the same before you charge it or if not repeat the same process. For some reason, when i did this, my battery has been good so far, dropped about 3-4% over night from 100% about (10hrs). But also some people found results in killing the battery 3 times, but i wouldn't advice doing it more then once a month because these batteries aren't meant to be killed..

not sure if this even make sense lol but it worked out for me

Thank you for the post on calibration but I fear you have not read past posts of mine, I was asking a direct question to someone who was trying what I normally do

My normal usage is 8-10 hours with 1.5 days standby, the reason for my fast drain today has been isolated to GPS settings being on constantly

Again thanks for the heads up

Oh i see, then yeah gps can kill your battery if you have every app having it constantly on..

Hi guys you shold try this

http://theiphonewiki.com/wiki/Firmware

and see video here

https://www.youtube.com/watch?v=nq0ZYwB5n50

and write repply

Do you know if the apps poll the gps even when they're not running?

If not, is there any way to test this?

This is a question for me as I have a lot of apps that could use it, but I keep them stopped most of the time.

They mention a purple arrow icon that's supposed to appear when gps is on. I never see it on mine, unless I have one of those apps running. Is that icon working correctly.

Battery Doctor will let you display everything which is running on your device.   You may want to download it and investigate.

IPhone 5 6.0.2 ... tried that tip two hours ago, recharged to 92% ... 3G on ... 41 mins + 1h22mins Standby ... 82% ... fingers crossed ... I will tell you tomorrow.

If it will not work ... I will DOWNGRADE to 6.0.1

BuferaRomena wrote:

 

IPhone 5 6.0.2 ... I will DOWNGRADE to 6.0.1

I thing i've got some bad news for you...

I guess that it will not be done ... isn't?
A collegue of mine who purchased an iphone 5 months ago told me that in the first three or four weeks his battery was a §.it, then, without any trick, it start to run better. He said me "be patient"

BuferaRomena wrote:

I guess that it will not be done ... isn't?

Right, so far there is no was to downgrade the iPhone 5.

A collegue of mine who purchased an iphone 5 months ago told me that in the first three or four weeks his battery was a §.it, then, without any trick, it start to run better. He said me "be patient"

Well, my phone is 3 months old now, nothing has been improved. Still the same behaviour: 3G on = 2-4 hours of light usage, 7-8 all together; 3G off = 8-9 hours usage, up to 24 hours standby

Based on experience on my own iphone 5, there may be some glitches in battery usage display. I unplugged my phone at 100% this morning and within less than 2 hours it dropped down to 95% with minimal use (2 min usage, less than 2 hours standby). I did a Reset all settings and the battery display went back up to 99% and the battery drain seems to be slower (drops only 1 percent during about the same amount of time). The percentage going back up after a reset leads me to believe the problem is related to capacity calculation and display. If the problem has to do with actual usage, the reset should not have caused an increaed in capacity. I am sure iphone 5 or iOS 6 is using more battery but I think this glitch is making things worse. This is the second time I have done the reset and each time the batter capacity went up after the reset. So, it's not a permanent fix and it seems to come back randomly. I hope they find the problem soon. It's somewhat of a pain to reestablish all the wi-fi's, wallpapers, and whatever other settings that function wiped out. 

You don't need to reset all settings but just reset the phone only.. Turn it off then turn it back on would do the same results.. And for some reason it does help with the battery, when i turn off the phone and turn it back on after each charge.. Or maybe its just me

In an earlier post i said that i don't think that this battery issue cld b fixed with software updates... I retract that statement.

I was just experimenting with the phone and turned cellular data off. I made a phone call and the call lasted 17min and my battery didn't drop a single percent. What makes this interesting to me is that during the entire conversation i was using a bluetooth ear piece..

There might b some hope after all..

Well duh, the battery will drain slowly when cellular data is off.. It does the same thing to all smart phones. Data = battery drain. If you notice, being on wifi drains battery slower then being on 4g/lte