Become a MacRumors Supporter for $25/year with no ads, private forums, and more!

iPhone 8.4 Killing 6 Battery

joshuakhania

macrumors member
Original poster
Sep 13, 2014
31
14
West Milwaukee, WI
Ever since installing 8.4 my battery can't last through the day. I had my phone charging through a computer and listening to NPR and it still died.

When I wake up in the morning the battery is at <10%. I hope this isn't an issue that doesn't get fixed for 2-3 months :eek:
 

Tony_YYZ

macrumors regular
Jun 30, 2015
164
96
I went from 8.2-8.4 on my 6. Battery life seems about the same so far.

I'd recommend a reset/start from scratch
 
  • Like
Reactions: joshuakhania
Comment

deep1

macrumors 6502
Mar 29, 2011
290
131
Great battery here, downgraded from iOS 9, is watsapp shows up in usage list? If so then in privacy contacts disable for the watsapp and enable as needed.
 

Attachments

  • image.jpg
    image.jpg
    245.8 KB · Views: 194
Comment

AML225

macrumors regular
Apr 11, 2010
192
1
I'm noticing the same on my 6+. After a normal day of usage in 8.3 my battery would be around 50-60%, now after a less than a normal day in 8.4 my battery is down to 36%. Neither of these involved listening to any music.
 
  • Like
Reactions: eyeseeyou
Comment

Ipadlover29

macrumors 6502a
May 28, 2011
840
216
I haven't used the music app at all today and battery life has been horrible. My phone is at 53% right now. The phone has been unplugged from the charger for less than 9 hours and usage is about 4 hours. Normally with the same usage and standby time before 8.4 I would be at 70%. I've disabled Apple music and iCloud music library. For the first time today I noticed my phone getting really hot when using google maps for navigation for 15 minutes. The car was not hot and air conditioning was running. I think I might do a clean restore if this continues.
 
  • Like
Reactions: AML225
Comment

C DM

macrumors Sandy Bridge
Oct 17, 2011
50,845
19,023
Had probably what is the best battery usage and standby I've ever had yesterday on my second day of using 8.4. Today it's been somewhat below average, which is not that common, but also not unusual with previous iOS 8 versions. So over a few days it's more or less about the same as before.
 
Comment

adamhenry

macrumors 68000
Jan 1, 2015
1,565
585
On the Beach
Battery life seems similar to 8.3 on my IP6. Yesterday I was at the beach for about 5 hrs listening to music through BT with some email and web browsing. I had 80% battery remaining when I got home.
 
Comment

Nonentity

macrumors member
Sep 11, 2007
84
9
+1 Add me to the list. iPhone 6+ gets very warm whilst streaming, and becomes unresponsive/music will skip like the processor is being throttled to reduce temperature.

Same usage as before 8.4: 1.5 hours for my morning commute/workout and 1 hour for my commute home. Streaming Beats Music would use 2% battery over 24hrs. Now the Music App is using 17% battery over 24 hours.

Even when I'm not streaming, battery life seems worse.

Anyone tried restoring (fresh or from backup) yet?

Also, if I restored as a new device, anyone know if my Activity App data will sync from iCloud or is it restored from backup only? Don't want to lose my 'achievements' ;)
 
Comment

XTheLancerX

macrumors 68000
Aug 20, 2014
1,908
782
NY, USA
Battery is MUCH better for me, usually at 50% I would see 3-3.5 hours of use.
 

Attachments

  • image.jpg
    image.jpg
    131.7 KB · Views: 134
Comment

XTheLancerX

macrumors 68000
Aug 20, 2014
1,908
782
NY, USA
Don't know what I would listen to, I use spotify lol. That's why I haven't run into any issues, probably.
 
Comment

GreyOS

macrumors 68040
Apr 12, 2012
3,310
1,641
I've had the best battery life I've ever noticed on 8.4!
 

Attachments

  • image.jpg
    image.jpg
    123.1 KB · Views: 143
Comment

bushido

Suspended
Mar 26, 2008
8,070
2,754
Germany
i am not sure if 8.4 or the heat wave outside is to blame yet in my case. however my iPhone 6 battery has always sorta sucked
 
Comment

Delorean2006

macrumors 6502a
Feb 4, 2012
784
296
Ever since installing 8.4 my battery can't last through the day. I had my phone charging through a computer and listening to NPR and it still died.

When I wake up in the morning the battery is at <10%. I hope this isn't an issue that doesn't get fixed for 2-3 months :eek:

My battery lit was awful on my 6+ at first, all I did was download the install file and forced the update through iTunes, performance was greatly improved, so was battery life and the phone stopped getting really warm
 
Comment

krzysko

macrumors newbie
Dec 12, 2014
4
0
What exactly did you do? I unchecked "show apple music" but that didnt change much in terms of battery...
My battery is around 20% worse with 8.4 - meaning i usually had 60-70% left in the evening and now i have barely 40-50
 
Last edited:
Comment

Ipadlover29

macrumors 6502a
May 28, 2011
840
216
I disabled iCloud music library, show apple music and in iTunes & App Store make sure use cellular data is disabled.
 
Comment
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.