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chillip

macrumors 68040
Original poster
Mar 16, 2013
3,245
2,850
im finding battery life is really poor on 10.3.2. Standby is poor, losing 20% overnight and it goes quickly during usage compared to 10.3.1. Anyone else?
 

chscag

macrumors 601
Feb 17, 2008
4,622
1,946
Fort Worth, Texas
That doesn't sound normal. Backup your phone to iCloud or iTunes and do a reset with iTunes. You'll have to turn off "Find My iPhone" first. Make sure you have your Apple ID and Password on hand. If that doesn't cure the poor battery life after reloading everything, you might want to visit your local Apple store and have them check out the battery.
 

chillip

macrumors 68040
Original poster
Mar 16, 2013
3,245
2,850
I've found the issue. Low signal. The phone lost 20% overnight when it was in a low signal area while on holiday. I put the phone in airplane mode with wifi And it only dropped 2% overnight.
 
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Mlrollin91

macrumors G5
Nov 20, 2008
14,172
10,187
I've found the issue. Low signal. The phone lost 20% overnight when it was in a low signal area while on holiday. I put the phone in airplane mode with wifi And it only dropped 2% overnight.
Low signal is the silent killer of batteries. I've had my 7Plus drain from 100->0 in 4 hours from low/no service.
 

chscag

macrumors 601
Feb 17, 2008
4,622
1,946
Fort Worth, Texas
I don't do a lot of traveling around with my 7+ and work mostly out of my home office. I keep my phone on WiFi calling and get very good battery life that way. I do agree though with the previous post about low signal draining your battery.
 

kingston73

macrumors 65816
Dec 23, 2015
1,166
717
Not an iphone but I updated my air 2 and after 2 days reverted back to 10.3.1

The 2 days I was on 3.2 I averaged a few hours less time than previous. Before the update, on 3.1 my standby time was great, overnight I'd lose nothing and it would still show 100%. After the update same exact scenario I'd wake up and it would be around 93%, just from sitting overnight.

Whatever's wrong with 10.3.2 it needs some work. I'll wait a while before updating again.
 

Jmgilliam18

macrumors regular
Apr 24, 2017
157
14
I did read somewhere that for a few days it will be worse while indexing the new iOS and then it will straighten out and be normal. I don't know though, new to iOS. Android was that way though.
 

DaPizzaMan

macrumors 6502a
Jun 14, 2016
550
1,186
I've found the issue. Low signal. The phone lost 20% overnight when it was in a low signal area while on holiday. I put the phone in airplane mode with wifi And it only dropped 2% overnight.
It shouldn't even drop 2% overnight...
 

TheArcher

macrumors newbie
Jan 16, 2014
25
9
iOS 10.3.2 is definitely buggy and is causing battery drain for a number of folks. My battery life is simply terrible since upgrading to the new release. I am anxiously awaiting 10.3.3 in which I have heard Apple has a 'fix.'
 

robes1

macrumors member
May 20, 2016
70
32
iOS 10.3.2 is definitely buggy and is causing battery drain for a number of folks. My battery life is simply terrible since upgrading to the new release. I am anxiously awaiting 10.3.3 in which I have heard Apple has a 'fix.'

Care to comment on the fix you've heard about? I'm on 10.3.2 and my battery life is horrible. Contemplating going back to 10.3.1 which wasn't that great either. I really hope Apple fixes this.
 

Jmgilliam18

macrumors regular
Apr 24, 2017
157
14
Count your blessings. I came from android about a month ago and this 7 year kid battery is heaven lol.

That being said, I haven't upgraded to the .3 yet. Still on 10.3.2
 

Mlrollin91

macrumors G5
Nov 20, 2008
14,172
10,187
why would a low or no signal drain the battery faster? I'm still hesitant to upgrade from iOS9 to 10 for one reason or another.
When your service is low, the device is automatically searching for stronger signal. This uses massive power.
 
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Stefan johansson

macrumors 65816
Apr 13, 2017
1,294
607
Sweden
I use the latest iOS version possible,as I charge both iPhone and iPad overnight,I don't see battery drain as a major problem,my phone still works for 3-4 phone calls,about 15 minutes of mail checks or newsfeed reading,and 8 hours of music listening. The iPhone 6 I got,does go down to about 8-15 percent battery after all that,but still,it's ok for me.
 

C DM

macrumors Sandy Bridge
Oct 17, 2011
51,392
19,461
Oh my good. Apple wash your brain.Believe everything written there and take it as a Bible
Simply linked to Apple as it's a single most relevant example given that we are talking about iOS devices. It's basics of electronics and signal processing. Similar (in context) to effects heat or cold can have on chemistry of batteries, for example. Not much to question there when it comes to fairly basic science--but it sounds like some (even limited/basic) research on the subject would be advisable.
 
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Stefan johansson

macrumors 65816
Apr 13, 2017
1,294
607
Sweden
Simply linked to Apple as it's a single most relevant example given that we are talking about iOS devices. It's basics of electronics and signal processing. Similar (in context) to effects heat or cold can have on chemistry of batteries, for example. Not much to question there when it comes to fairly basic science.
It's not the batteries that cause weak signal,it's weak transmitters. Old phones like Nokia 3310 or Ericsson r232 does not have the connection problem,as transmitters in GSM phones are set to higher output power,the 232has about 6 or 7 times the output power of any iPhone.
 

Mlrollin91

macrumors G5
Nov 20, 2008
14,172
10,187
It's not the batteries that cause weak signal,it's weak transmitters. Old phones like Nokia 3310 or Ericsson r232 does not have the connection problem,as transmitters in GSM phones are set to higher output power,the 232has about 6 or 7 times the output power of any iPhone.
I think you misinterpreted what he is saying. Obviously the battery doesn't control signal, but battery life is based on signal strength.
 
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