LowBatteryLog on iPhone 4S 64GB black iOS 5.1.1

2012-06-08 20:05:06

As the title suggests, I recently had my iPhone 4S 64GB replaced for another one because the previous one had some issues. The replacement, I noticed, has a somewhat poorer performing battery life. Standby is ok, but when I start using the battery does drop noticably. My settings a the bare minimum. Screen Brightness dimmed to 0, location services OFF as well as the system services everything is turned OFF, no email accounts whatsoever, notification center has NOTHING displaying everything is OFF, i only use cellular data when I'm out the house and most of the time I'm not even on 3G (i turn it off), WiFi only when I'm home, bluetooth OFF, no WiFi iTunes synching, no iCloud, Diagnostics&Usage set to Don't Send, i turn off all apps running in the background including settings as set my phone to standby, my carrier settings is set to manual and not Automatic. At night I swtich to airplane/flight mode (WiFi still on though) to save battery. I did a full discharge and recharge of the battery letting it run to 0 till it turns off alone and recharge till 100% and leave on for an extra hour after its recharged fully. I have only 6 apps, 10 photos, no music/media at all. The phone is set-up as a new iPhone and not restored from a backup.

I did check in my diagnostics&usage that I have 2 LowBatteryLogs; one of which is regarding Springboard is preventing my iPhone from entering sleep mode, and the other is regarding the Music App preventing my iPhone from sleeping as well.

For Springboard it says: PreventUserIdleSystemSleep == 255, held for 00:01:36

For the Music App it says: PreventUserIdleSystemSleep == 255, held for 00:12:56

PreventUserIdleSystemSleep == 255, held for 00:05:04

PreventUserIdleSystemSleep == 255, held for 00:04:54

The Music App also mentions that music is playing in the background, and as I stated, I do NOT have any music or media whatsoever. But I did accidently tap on the Music App but then I immediatly exited the app and quit it from background.

I sleep for 8hrs so during 8hrs of the day I turn off the mobile network and keep the WiFi on.

I already did 2 restores and set the iPhone as a new phone

Here are my usage and standby stats as my iPhone hit 1% battery remaining:

1) Usage 7hrs, 41mins

Standby 1Day, 12hrs

2) Usage 8hrs, 34mins

Standby 2Days, 0hrs

Please note: during 8hrs of the day (when I'm asleep), I put the phone on airplane/flight mode so no mobile network but keep the WiFi on.

Are these numbers OK? And also, what is the issue of my LowBatteryLogs?? Do I have a faulty battery or is it software related and I just need to wait for an update??

P.S.- I'm on iOS 5.1.1

RE:LowBatteryLog on iPhone 4S 64GB black iOS 5.1.1

2012-06-08 20:05:06

ALSO just to add.....Siri is turned OFF !!

RE:LowBatteryLog on iPhone 4S 64GB black iOS 5.1.1

2012-06-08 20:05:06

ALSO just to add.....Siri is turned OFF !!

RE:LowBatteryLog on iPhone 4S 64GB black iOS 5.1.1

2012-06-08 20:05:06

progressia wrote:

As the title suggests, I recently had my iPhone 4S 64GB replaced for another one

FYI: The title suggests no such thing...

As far as the numbers go, it looks pretty reasonable to me without knowing exactly what you are doing on it.

For what it's worth, turning off cellular data when you are at home will actually drain your battery much more quickly if you're in range of your WiFi network. Why? By default, the WiFi radio will power off when the phone is in standby. It requires much more power to maintain an active WiFi connection when no data is actually being transmitted than it does to maintain the 3G data connection. By turning off cellular data, the WiFi radio will stay on, drastically reducing your standby time.