Well there's always things you can do to tweak it of course,
see http://www.apple.com/au/batteries/iphone.html if it's of interest to ya
It's been raining almost solidly for about 3 weeks - no joke! Otherwise not a bad city
It is now 2.30pm and my phone is on 3hours24mins usage and 17hours32mins standby and down to 35%.It was at 70% yesterday at 11.20pm and was under 1hour27 minutes usage,2hours 25 minutes standby.Is this good?
Yes, it's within spec.
If I understand your numbers, at 11:20 PM it was at 70%, at 2:30 PM the next day it was at 35%. So it dropped 35% in those 15 hours (70-35). Also, the night before it had 1:27 usage, and the next afternoon it had about 2 additional hours of usage and roughly 15 hours of standby (which is no surprise that the time interval is the same calculated by 2 different methods).
Depending on what kind of usage (WiFi, cellular data, phone calls, watching videos, playing games) the numbers are about right. First, 15 hours standby. The Standby spec is "up to 200 hours". If 200 hours = 100%, then each hour should see a 1/2% drop.So 15 hours should account for a 7.5% drop. I'll assume an average of 8 hours usage life. So when in use you should expect a loss of 100/8 or 12.5% per hour. So the 2 additional hours would account for 2x12.5% or 25%. 25% + 7.5% is an expected drop of 32.5%. Pretty close to what you saw.
As to strategy, why don't you just charge it every night, overnight, so the next morning it is always at 100%, which should get you through the day with no problems.
So taking away the sim temporarily, then putting it back inside will fix the issue ?
Battery drain is a symptom, not a disease. It has many possible causes. Which you can see if you read the many different ways people have fixed it in this thread and others. Removing the SIM is one way that works for some people. It will not resolve the problem for everyone, but one of the other posted solutions will if it doesn't.
Why do you think that it is not a problem whit IOS 6.1.2?
Can you please explane!!!
My iphone 5 lasts 6-7 hours on 3G network surfing!
And 3-4 hours on LTE 4G after 6.1.2 update!!
I try everything..
Install over itunes three times
Reinstall e mail
And iphone 5 still can not keep a day of use without charge, So what's the problem if it is not in the software!
and to be quite hot during the filling
I KNOW it is not a problem specifically with 6.1.2 because the same problem has occurred for a few users with every version of iOS ever released. I also KNOW it is not a general problem because I don't have it. And from reading this thread there are a number of posts from people who have fixed it, and they fixed it the same way it has been fixed for every other version of iOS.
Is it possible that not all iphones are made the same way? I mean there are iphones for the US market, Asian market, European market etc. For one, I know that the gsm networks are not all the same. Some are more technologically advanced than the others. Is it possible that with this upgrade, apple forgot about the other gsm networks? Apple released an ios 6.1.1 update for iphone 4s which states:
About iOS 6.1.1 Software Update
This update fixes an issue that could impact cellular performance and reliability for iPhone 4S.
For information on the security content of this update, please visit this website:
Maybe some iphone 5's like ours also need updates like these. Like I told you guys before, my iphone 5 gets warm when I go to some low signal places, like in the elevator, inside some stores etc. Also, when I use it for calls and text, it drains faster than when I use it for browsing over wifi. I can live with my battery now coz I can get through a day with one charge, but before, I can get through 2 days. I just want to understand what is wrong here. If my unit is defective or it is just a glitch of the ios.
It is still apple products for me, coz I've seen some samsungs, and htc's draining batteries like mad.
not the case that it is only a few users! we are talking about millions, how do you explain that people have not had such problems with 6.0.1?
If the problem is not 6.1.2 then what is the problem? in applications? iPhone? You're saying that this is completely normal! I would say that this is a great shame for Apple and that they all should apologize to customers for the problems that brought the 6.1.2. In my opinion Tim Cook should publicly apologize as he did with the failure to Apple Maps recently
personally I think it's a huge bug here, and a security failure and a failure of quality using the device! no steps can not guarantee that everything will be improved simply by itself!
Apple simply has to issue improvement or issue instructions so that users treat the problem and to address the service another way to solve this disgrace does not exist
Maybe, maybe, maybe...but the identical arguments have been make by people who had heavy battery drain after installing iOS 2.1 over 5 years ago, and 3.0, and 3.1, and 3.1.3, and 4.x, and 5.x, and 6.0, etc. Every one who argued from this angle was absolutely certain that it was a bug in the iOS version they installed. There has not been a single version where this argument was not made.
It is not a problem with your hardware. It is not a problem with any one version of iOS. It is a problem with an app that has corrupt data in it and is running continuously and using up battery. The ugrade process itself may have introduced the bad data, or a glitch in the process of installing it.
As to your specific issues:
Your phone gets warm when you go to low signal locations because the phone must increase its output power to maintain a connection. By a lot. When you have 5 bars the phone uses its lowest transmitter power setting, which is probably around 50 milliwatts (50 mw). When it only has 1 bar it must change to 600 mw, over 10 times higher. Which means the battery drain will be 10 times higher, so the battery gets warmer. Add to this the fact that the transmitter is not 100% efficient, so the transmitter chip also gets hotter.
Your phone gets warmer using cellular for either voice or data for the same reason. WiFi uses 30 mw. Cellular uses a minimum of 50 mw, and will use more as the distance from the tower inceases.
Thanks for all your comments and staying on top of the issues. You seem to have a lot of experience with iOS updates and releases, which is a major help to a thread like this...
My feeling go out to everyone here because I am experiencing the same problems with battery drain on 6.1.2.
My 4s & 5 were running 6.0.1 and I refused to update until recently until the "exchange bug" was fixed. I used 2 Exchange account with Active Sync Contacts. On 6.0.1, it was hard for the phone to die throughout my work day. I run Daylite 4 Touch, Zendesk, Freshbooks, Spotify and Google Chrome & Maps, GPS, Bluetooth all day without any problems with battery drain. I would be at ~50% getting into bed that night.
On 6.1.2, the very first day, phone was in the red by the afternoon. This was my iphone 5. My colleague is using a 4s and the exact same thing happened. It continues to happen regardless of option turned on and off etc. I never turned and off, nor reset my phone running 6.0.1, it just worked fine.
We are Apple developers and now are running 6.1.3 Beta 2. Im sad to report that nothing has changed for either phone. I have faith they will fix the issues, no doubt, just not too fun at the moment.