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iOS 12 on iPhone SE: is performance/battery life worse?

Rhino1 said:
This should be interesting!
Click to expand...

iPhone SE
iOS 12.1.2

Battery off charge at 08:20
Time now: 19:37
Actual usage today: 5 hours.
Current battery level: 52%.

That’s projected to be double the battery life I was getting last week on the old battery (20 months old, 255 cycles, 93% health (but Coconut Battery health 76%).

Well worth getting a new battery from Apple.
 
i know with a new ios or os that for the SYSTEM to know whats new, it has to reorganize the files on the storage after a upgrade, so typically after 48 hrs of a new ios update, things should be more "normal" ....then battery should level out...i have a 6s and getting a iphone se tomorrow...again...ios 12.1.2, which is good...all around...affordable, apple would lOVE to and does enjoy telling customers that HAVE too SHOULD upgrade get new phone...BUT WE all are getting smarter to say no...ios 12 brought new life to the older phones...:) period...
 
Hey people.. just got here. Recently updated my iPad 2018, iPhone 6s and iPhone SE to iOS 12.2.
SE was on 10.3.3.
I can say the performance is actually great. I updated as I was having some issues.
About 12.2 ..update was 2gb something which took around 20mins to install.
The update feels stable. Battery life is amazing still with 94% battery health.
Boot time is very much the same. Charges quickly as the SE always did. No lags or bugs noted yet.
So overall I would say 12.2 is treating my devices well.
Note: I did switch the screen time off. Which kinda sorts the battery issue(if any)

Thanks to all you amazing people for helping me make up my mind and and updating finally :)
 
SStechos said:
Hey people.. just got here. Recently updated my iPad 2018, iPhone 6s and iPhone SE to iOS 12.2.
SE was on 10.3.3.
I can say the performance is actually great. I updated as I was having some issues.
About 12.2 ..update was 2gb something which took around 20mins to install.
The update feels stable. Battery life is amazing still with 94% battery health.
Boot time is very much the same. Charges quickly as the SE always did. No lags or bugs noted yet.
So overall I would say 12.2 is treating my devices well.
Note: I did switch the screen time off. Which kinda sorts the battery issue(if any)
Thanks to all you amazing people for helping me make up my mind and and updating finally :)
Click to expand...

I would agree with mostly all what you said, I cannot regret so much of upgrading an Apple A9 machine to iOS12.1.4 (or above), but not everything is pinkish.

Performance is good, no lags, security patches,... etc. Everything looks perfect,... BUT not battery life.

It was already tested, and I agree on those figures:


Briefly:

iPhone's 6s (and similar) running iOS 10.3.3: 5h40m

iPhone's 6s (and similar) running iOS 11.4.1: 3h23m

iPhone's 6s (and similar) running iOS 12.2.0: 3h28m

And of course, I also switched the new iOS12 Screen time off; otherwise above iOS12 timings would be much worse.

So, your iPhone will run as new,... but you will have to recharge it more often, and also battery health lifetime gets impacted,... gets reduced much faster over time; so you will have to replace the battery in less than a year, if not sooner.

I think Apple not really tuned iOS12 for old A9 devices,... but the SoC is throtted at max performance at longer periods; which explain the impact on battery on time. Now is up to everybody to decide what to do.
 
How are people getting more than 3 hours of screen on time with the 6s on iOS 12? Mine has a new battery with 100% health, installed as new (no backup), screen time off, background refresh off, and I can’t get more than 2 hours 30 mins screen on time. I carry a backup phone with me.
 
minimo3 said:
How are people getting more than 3 hours of screen on time with the 6s on iOS 12? Mine has a new battery with 100% health, installed as new (no backup), screen time off, background refresh off, and I can’t get more than 2 hours 30 mins screen on time. I carry a backup phone with me.
Click to expand...

Nobody is. They’re counting call time, background activity etc as screen time. iOS 12 clubs all that into screen on time if you’re looking at the battery graphs. The only way of knowing screen on time is by keeping Screen Time enabled. Nobody here seems to be doing that.

Even a X doesn’t really get more than 4-5 hrs of real screen on time in iOS 12.
[doublepost=1554996345][/doublepost]
torakaru said:
I would agree with mostly all what you said, I cannot regret so much of upgrading an Apple A9 machine to iOS12.1.4 (or above), but not everything is pinkish.

Performance is good, no lags, security patches,... etc. Everything looks perfect,... BUT not battery life.

It was already tested, and I agree on those figures:


Briefly:

iPhone's 6s (and similar) running iOS 10.3.3: 5h40m

iPhone's 6s (and similar) running iOS 11.4.1: 3h23m

iPhone's 6s (and similar) running iOS 12.2.0: 3h28m

And of course, I also switched the new iOS12 Screen time off; otherwise above iOS12 timings would be much worse.

So, your iPhone will run as new,... but you will have to recharge it more often, and also battery health lifetime gets impacted,... gets reduced much faster over time; so you will have to replace the battery in less than a year, if not sooner.

I think Apple not really tuned iOS12 for old A9 devices,... but the SoC is throtted at max performance at longer periods; which explain the impact on battery on time. Now is up to everybody to decide what to do.
Click to expand...

iOS 12 gives good battery life only with XS/XR/Max. X/8+ won’t get as much as iOS 11. Not even close.
 
aakshey said:
Nobody is. They’re counting call time, background activity etc as screen time. iOS 12 clubs all that into screen on time if you’re looking at the battery graphs. The only way of knowing screen on time is by keeping Screen Time enabled. Nobody here seems to be doing that.

Even a X doesn’t really get more than 4-5 hrs of real screen on time in iOS 12.
[doublepost=1554996345][/doublepost]

iOS 12 gives good battery life only with XS/XR/Max. X/8+ won’t get as much as iOS 11. Not even close.
Click to expand...

Yep, I agree with you, it has all sense, as they optimize for latest platform SoC. Apple just this time gave back fast user experience feeling of iOS12 on older devices, as shorter battery time penalty.
 
aakshey said:
Nobody is. They’re counting call time, background activity etc as screen time. iOS 12 clubs all that into screen on time if you’re looking at the battery graphs. The only way of knowing screen on time is by keeping Screen Time enabled. Nobody here seems to be doing that.

Even a X doesn’t really get more than 4-5 hrs of real screen on time in iOS 12.
[doublepost=1554996345][/doublepost]

iOS 12 gives good battery life only with XS/XR/Max. X/8+ won’t get as much as iOS 11. Not even close.
Click to expand...
I've had times when screen on time was in the 5-6 hour range on my iPhone 7. Not so sure about everything being put together into screen on time when there is a separate screen off time that has a count going as well.
 
C DM said:
I've had times when screen on time was in the 5-6 hour range on my iPhone 7. Not so sure about everything being put together into screen on time when there is a separate screen off time that has a count going as well.
Click to expand...

The counters are inaccurate. Off screen usually doesn’t work. Almost always everything goes to On Screen.

You need to enable Screen Time. You’ll understand what I’m saying.
 
05E2006B-8E77-4878-8647-CBCE762AADE3.png
Here’s what I’ve been getting
 
I take all of my words back. iOS 12 isn’t really a battery drain. Reasons for issues are:

Poor battery health
Software bug
Diff measurement methods
And maybe just slightly poorer batter life with iOS 12, but that’s debatable and I’m unsure.
 
aakshey said:
I take all of my words back. iOS 12 isn’t really a battery drain. Reasons for issues are:

Poor battery health
Software bug
Diff measurement methods
And maybe just slightly poorer batter life with iOS 12, but that’s debatable and I’m unsure.
Click to expand...
From my limited studying of battery health on iOS, the life rarely changes per version. I've used a lot of 32-bit devices with multiple OSes thanks to Coolbooter and there seems to be no difference. Changes in cellular/GPS usage can be a massive hit to your battery.
 
retta283 said:
From my limited studying of battery health on iOS, the life rarely changes per version. I've used a lot of 32-bit devices with multiple OSes thanks to Coolbooter and there seems to be no difference. Changes in cellular/GPS usage can be a massive hit to your battery.
Click to expand...

I’m not denying there aren’t battery life issues. What I’m saying that the iOS version doesn’t seem to the primary (or at all) cause of that.
 
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aakshey said:
I’m not denying there aren’t battery life issues. What I’m saying that the iOS version doesn’t seem to the primary (or at all) cause of that.
Click to expand...
I meant in my post that it seems like the iOS version doesn't change battery very much, and it's more reliant on cellular/GPS usage patterns from my findings. I do wonder if some of the versions of iOS 11 hit battery life, because I saw a lot of people have drastic drops in battery life after updating.
 
iOS12.x (mostly like iOS11) consumes around 50% battery than iOS10. That is a fact, and has been proved, even on testing videos on YouTube. I can assure it also. iPhone with iOS10 gave me 50% more battery (screen on) time than iOS12. It is true that iOS12 is almost same smooth as iOS10 was (which is also great, and I'm very happy to be able to use a modern latest iOS in a so old device),... but the battery life time lost penalty is there.
 
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torakaru said:
iOS12.x (mostly like iOS11) consumes around 50% battery than iOS10. That is a fact, and has been proved, even on testing videos on YouTube. I can assure it also. iPhone with iOS10 gave me 50% more battery (screen on) time than iOS12. It is true that iOS12 is almost same smooth as iOS10 was (which is also great, and I'm very happy to be able to use a modern latest iOS in a so old device),... but the battery life time lost penalty is there.
Click to expand...

What kind of SOT do you get on your SE?

My aunt’s SE gets 5-7 hrs SOT including a lot of FB.
 
JaxTeller said:
Like he said, there is a video that shows that the battery took a major hit compared to iOS 10.
Click to expand...

No. It doesn’t.

They did a YT test too. And bat life was similar, not far apart.

You can’t use diff Geekbench versions for such tests.
 
I don't understand this thread. One particular poster has contradicted himself multiple times in this thread first stating that no one is getting more than 3 hours of SOT from a 6s but goes on to say that 4-5 hours of SOT is normal. I think the one guy who seems be involved in every battery conversation and seems to think he knows how everyone else's battery is doing down to the point of telling them they're wrong about their own SOT should keep quiet because he cannot speak for everyone's experience, and his own claimed experience is questionable at this point.
 
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aakshey said:
No. It doesn’t.

They did a YT test too. And bat life was similar, not far apart.

You can’t use diff Geekbench versions for such tests.
Click to expand...
Yes you can, it shouldn't have such a major difference, check this video. If you can't watch the entire video, skip to 14:15.
 
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