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iPhone 6S Plus Battery Drain

shez

shez

macrumors member
Original poster
Oct 14, 2015
50
7
Hey guys

At night I leave my iPhone on DND and also low power mode. I normally sleep 12AM - 7.30AM and when I wake us I notice that my phone has drained 5% over night exactly. Is this too much? What do you think is draining it? You'd think it would hardly use anything with it being on standby and also low power mode.

IPhone 6S Plus 64GB - Samsung A9
Running iOS 9.1 B5
 
shez said:
Hey guys

At night I leave my iPhone on DND and also low power mode. I normally sleep 12AM - 7.30AM and when I wake us I notice that my phone has drained 5% over night exactly. Is this too much? What do you think is draining it? You'd think it would hardly use anything with it being on standby and also low power mode.

IPhone 6S Plus 64GB - Samsung A9
Running iOS 9.1 B5
Click to expand...
5% is bad? thats normal for me

sometimes it's 8/9 %

hell my S6 edge used to drain like 11% overnight

I get loads of twitter notifications during the night in fairness and will get even more when the NBA season starts
 
So my experience w/ battery life for the first couple of days has been underwhelming, but today I'm trying an experiment to see for how long it will play streamed music (with the screen off throughout) before the battery goes out. 6 hours in (5.5 = 802.11ac, 0.5 = LTE), it's at 85%, meaning that it should be able to keep going for 46 hrs total. I guess that's not too shabby considering the 80 hr figure determined by Apple involves local media, not streamed.

The battery is reported to hold .3% over design capacity. Mega-drainage appears to kick into high gear when pixels are being shuffled around... that's when my 6s Plus behaves like it had a 5s battery. Forget "12 hrs internet use", think 4(ish).

Not placing the blame on the Samsung chip just yet (ahem) but maybe, just maaaaayyyybe this has something to do with the Samsung-made embedded M9 vs iOS 9...?
 
5% overnight? That's normal ... As a matter of fact anything 10% and under could be considered quite normal. The iPhone 6 Plus and 6s Plus both have great battery life anyway...
 
shez said:
Hey guys

At night I leave my iPhone on DND and also low power mode. I normally sleep 12AM - 7.30AM and when I wake us I notice that my phone has drained 5% over night exactly. Is this too much? What do you think is draining it? You'd think it would hardly use anything with it being on standby and also low power mode.

IPhone 6S Plus 64GB - Samsung A9
Running iOS 9.1 B5
Click to expand...

I can tell you this, Last night off charger at 100% charge at 11:00 pm, This morning at 6:00 am
I still have 100% battery! Yes I have the TSMC chip in my 6s plus 128 gb Sim free device.

CC
 
I don't put my phone in low power mode or turn on DND overnight. If I go to bed with it at 100% charge, when I wake up it's usually at 99%, but I've seen it at 100% a couple times (and I also have the Samsung chip so let's not go blaming that! :p ). 64 gb 6S+.
 
Anuba said:
So my experience w/ battery life for the first couple of days has been underwhelming, but today I'm trying an experiment to see for how long it will play streamed music (with the screen off throughout) before the battery goes out. 6 hours in (5.5 = 802.11ac, 0.5 = LTE), it's at 85%, meaning that it should be able to keep going for 46 hrs total. I guess that's not too shabby considering the 80 hr figure determined by Apple involves local media, not streamed.

The battery is reported to hold .3% over design capacity. Mega-drainage appears to kick into high gear when pixels are being shuffled around... that's when my 6s Plus behaves like it had a 5s battery. Forget "12 hrs internet use", think 4(ish).

Not placing the blame on the Samsung chip just yet (ahem) but maybe, just maaaaayyyybe this has something to do with the Samsung-made embedded M9 vs iOS 9...?
Click to expand...

I consistently get over 9 hours of web browsing from my 6S+, and that's whilst doing additional tasks all day long like taking calls, using apps and sending SMS. The quoted stats of up to 11 hours of WiFi/LTE browsing is spot on.

As for overnight losses, it all depends on your settings. If you have emails fetching or pushing, notifications, backups occurring etc. I put my phone into airplane mode at bedtime and lose nothing, or a max of 1%.
 
e36c611a232d3ddfbe90388b17b75cfc.jpg
 
Mine doesn't drop from 100% overnight. This was with charging overnight. I always have wifi and wifi calling on. I do have battery draining options turned off, like background refresh, auto updates, Hey Siri, Spotlight search Siri suggestions, Auto brightness, Location Services off on most apps, etc.

IMG_2282.png
 
They have these really cool things called chargers. You can put one right next to your bed. Problem solved.
 
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tallazzPilipino said:
I haven't seen a drop of even 1% (from 100%), yet (other than the single time my phone was acting up).
Click to expand...
Well, technically it does drop... it has to. "100%" is a white lie on both Macs and iOS devices, as you can easily verify w/ Coconut (which now gives you complete battery info about any USB-connected iOS device). The precise reading can drop to 98% or even less before the "official" indicator starts reading less than 100%.
 
Anuba said:
Well, technically it does drop... it has to. "100%" is a white lie on both Macs and iOS devices, as you can easily verify w/ Coconut (which now gives you complete battery info about any USB-connected iOS device). The precise reading can drop to 98% or even less before the "official" indicator starts reading less than 100%.
Click to expand...
oh, of course. but I was just going off Apple's own scale (which I believe we were all going by). so, after 5 mi, I was still on Full. loll
 
Last edited:
tallazzPilipino said:
oh, of course. but I was just going off Apple's own scale (which I believe we were all going by). so, after 5 mi, I was still on Full. loll
Click to expand...
Heh, yeah. Mine drops to about 95-96% overnight but then again I have most of the "known culprits" activated, various push notifications, checking 5 email accounts etc. My focus is on using this thing the way I want to, not disable functionality in order to keep some number as high as possible. ;)
 
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cc999 said:
I can tell you this, Last night off charger at 100% charge at 11:00 pm, This morning at 6:00 am
I still have 100% battery! Yes I have the TSMC chip in my 6s plus 128 gb Sim free device.

CC
Click to expand...
I'm in same boat , imo the best iPhone of all time, best of any phone actually, the..

iPhone 6s PLUS, 128gb TSMC A9 sim free unlocked (rose gold)
 
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I have the 6S plus 64 GB sim free with Samsung Chip, was in wireless inductive charger. Woke up, still at 100% with 2 hours and 30 minute usage time, standby time 7 hours. :cool:

Clearly something was running in the background while screen was off. But still good battery life.
 
My 6S Plus has more battery left over at the end of the day than my Galaxy S6 Edge+. At bedtime, my 6S Plus still has around 50% compared to my Galaxy S6 Edge+ which usually hovered around 35%.
 
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