iPhone 6 battery drain overnight (~25% to 0%)

dndandrea

macrumors 6502
Original poster
Feb 10, 2010
265
0
Am I the only one experiencing this? I usually set my alarm at 11PM for 5AM-7AM. Roughly 6-8 hours of standby time. I go to bed with a reasonable amount of battery life (25% or more). All my background applications are closed out except the clock for my alarm. (and I have disabled the ability for apps to refresh in the background). This morning was the third time it has happened.

Honestly, during the day my phone seems to be okay. Sure, i'm having to charge it every day. But it seems to be better than my iPhone 5. Is there anyway for Apple to diagnose this problem or will they probably just brush it off?
 

dndandrea

macrumors 6502
Original poster
Feb 10, 2010
265
0
You went to bed and you didn't put your iPhone on charge? why?
I was charging my iPhone 5. I don't like leaving a phone on a charger at 100% for hours every day. I have heard it's not good for battery life.

Either way, the argument was why is it draining so fast in standby mode?
 

yanki01

macrumors 68040
Feb 28, 2009
3,507
1,618
Texas
reset your cellular data before bed and do it all over again tonight. see if it's an application draining your data. I noticed on iOS 8 that a lot or all of the apps now ask for using your location even when the application is 'NOT' running.
 

dndandrea

macrumors 6502
Original poster
Feb 10, 2010
265
0
reset your cellular data before bed and do it all over again tonight. see if it's an application draining your data. I noticed on iOS 8 that a lot or all of the apps now ask for using your location even when the application is 'NOT' running.
What is resetting cellular data and how do I do it? I've also noticed that apps seem to be running in the background even when they're all closed out.

Edit: ohhh do you mean the statistics? Wouldn't it be using wifi while i'm at home sleeping though?
 

dndandrea

macrumors 6502
Original poster
Feb 10, 2010
265
0
i went to bed with 30% the other night and woke up with 28%, do you have it connected to Wifi all night?
The location of where I put my phone is close to where I lose wifi, but it should be connected to wifi and not LTE. Is it safe to assume that the battery would die if it was under LTE instead overnight? Even in standby mode?

edit: scratch that. It definitely stays connected to wifi in that position, not LTE.
 

yanki01

macrumors 68040
Feb 28, 2009
3,507
1,618
Texas
What is resetting cellular data and how do I do it? I've also noticed that apps seem to be running in the background even when they're all closed out.

Edit: ohhh do you mean the statistics? Wouldn't it be using wifi while i'm at home sleeping though?
It should but just to rule out nothing is running in the background.
 

mastershakess

macrumors 6502
May 14, 2008
498
3
Bel Air, MD
The location of where I put my phone is close to where I lose wifi, but it should be connected to wifi and not LTE. Is it safe to assume that the battery would die if it was under LTE instead overnight? Even in standby mode?

edit: scratch that. It definitely stays connected to wifi in that position, not LTE.
Do you have it pushing emails to the phone all night or are you getting a lot of updates from say sports or news apps all night?
 

eclipse01

macrumors 68030
May 16, 2011
2,522
271
Eau Claire, WI
I was charging my iPhone 5. I don't like leaving a phone on a charger at 100% for hours every day. I have heard it's not good for battery life.

Either way, the argument was why is it draining so fast in standby mode?
actually that is very good for your phone, a battery only has a set number of discharges once you go through them your battery is dead...if you never discharge your battery it will last longer, easy as that....
 

joeblow7777

macrumors 603
Sep 7, 2010
6,161
7,187
Strange. I don't have a 6 yet, but my 5s never loses more than 1 or 2% max over night. Usually it doesn't go down even 1% after 6-7 hours of standby.

If it continues to be a problem, I would suggest putting your phone in airplane mode over night, turn off push notifications, and as others have said, close background apps.
 
Last edited:

njchris

macrumors regular
Sep 14, 2007
248
21
Huntington Beach, Ca USA
See if the GPS icon is in your upper right area of the screen. And then check what apps are using it.

Something has to be actively using your phone resources when it's sitting idle.
 

dndandrea

macrumors 6502
Original poster
Feb 10, 2010
265
0
It should but just to rule out nothing is running in the background.
Good idea, i'll report back tomorrow with my findings.

Do you have it pushing emails to the phone all night or are you getting a lot of updates from say sports or news apps all night?
No. I set it so I have to manually check.

See if the GPS icon is in your upper right area of the screen. And then check what apps are using it.

Something has to be actively using your phone resources when it's sitting idle.
I do not have a GPS icon on my phone now, but I will check again before I go to bed.
 

joeblow7777

macrumors 603
Sep 7, 2010
6,161
7,187
actually that is very good for your phone, a battery only has a set number of discharges once you go through them your battery is dead...if you never discharge your battery it will last longer, easy as that....
Not entirely true. Maintaining a 100% charge all the time isn't necessarily great for your battery. It should be charged and discharged regularly. The electrons need to flow.
 

lke

macrumors 6502a
Jun 19, 2009
557
9
If you can't reset the battery stats then they have to put that option
 

freeskier93

macrumors 6502
Jul 13, 2008
321
68
Not entirely true. Maintaining a 100% charge all the time isn't necessarily great for your battery. It should be charged and discharged regularly. The electrons need to flow.
This is a complete myth left over from the days of NiMH and NiCd batteries and is totally untrue for Li-ion. You should always keep your phone as charged as possible and sitting on the charger at 100% isn't going to hurt it.
 

joeblow7777

macrumors 603
Sep 7, 2010
6,161
7,187
This is a complete myth left over from the days of NiMH and NiCd batteries and is totally untrue for Li-ion. You should always keep your phone as charged as possible and sitting on the charger at 100% isn't going to hurt it.
Don't get me wrong, I'm not saying that keeping it plugged in at 100% hurts the battery, but I have read in various places (usually referring to laptops, because they're more likely to be used plugged in) that NEVER discharging your battery does shorten its life.
 

geoff5093

macrumors 68020
Sep 16, 2014
2,221
2,539
Dover, NH
One of the worst things you can do to a Li-ion battery is to run it out completely all the time. Full discharges put a lot of strain on the battery, and it's much better practice to do shallow discharges to no lower than 20 percent.

One common misconception is that Li-ion batteries will only count charge cycles if the battery is drained completely in one session; another is that the battery counts one charge cycle for every instance the device is unplugged and plugged in again. Neither of these is true—Li-ion batteries actually count charge cycles based on a 100 percent discharge even when it's summed over multiple sessions. For example, if you discharge a battery to 50 percent one day, charge it back to 100 percent, then discharge it 50 percent again the next day, that is counted as one "cycle" of the battery. So shallow discharges, in all these regards, are ideal for a Li-ion battery.

On the other end of the spectrum, keeping a Li-ion battery fully charged is not good for it either. This isn't because Li-ion batteries can get "overcharged" (something that people used to worry about in The Olden Days of portable computers), but a Li-ion battery that doesn't get used will suffer from capacity loss, meaning that it won't be able to hold as much charge and power your gadgets for as long. Extremely shallow discharges of only a couple percent are also not enough to keep a Li-ion battery in practice, so if you're going to pull the plug, let the battery run down for a little bit.

http://arstechnica.com/gadgets/2011/02/ask-ars-what-is-the-best-way-to-use-an-li-ion-battery/
 

str8spd2001

macrumors regular
May 12, 2009
163
10
Los Angeles
Something doesn't sound right. The last couple of time I checked my iPhone 6+ I was losing 1-2% over night and that is from 12-7. If your losing 25% or more something is running or a glitch somewhere.
 
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