- David and David here.
Let's talk about how to fix a hot iPhone.
- And why would we wanna fix a hot iPhone?
So if your iPhone is really hot,
and you've left it out in the sun,
try putting it in the shade.
I mean, that's kinda the fix there.
Don't leave it in your hot car.
Treat your iPhone like you would your dog.
You wouldn't leave your dog in the hot car,
don't leave your iPhone there either.
- Yeah, and throw it away after three years.
- That's good.
- Yeah, that's good.
So, don't do that with your dog.
So what we're talking about here,
is the difference between normal heat and abnormal heat.
Normal heat happens when you're playing a 3D game,
or you're in a hot environment,
because the iPhone is glass, and, just, metal,
and has way of holding in heat.
Abnormal heat is what happens
when you're just using your phone,
maybe to watch a YouTube video,
which nowadays is not processor intensive, used to be.
Is it getting hot in your pocket
when you're not using your phone?
Something's going on, if it is,
that's causing your iPhone to get hot.
- Yes, let's lighten the load on your iPhone.
First fix, just close all of your apps.
- That's a good one.
- So, if you have an iPhone with a home button,
double press that home button, app switcher will open.
If your iPhone has face ID, like my iPhone 11 Pro here,
slide up from the bottom to the center of the screen,
hold your finger there, and just swipe your apps
up and off the top of the screen.
- But David, you should never have to do that.
- Well, sometimes you do, if they crash.
- Right, exactly. iPhones apps aren't perfect.
- Yeah.
- Yeah, we're just trying to preempt some comments there.
"Can't believe you guys are saying to close your apps!"
It's a good idea.
- Yeah.
Next, check in settings analytics.
And we're going to see if there's any apps
that are sticking out, that are obvious problem apps.
Open the settings app, scroll down to privacy,
scroll down to analytics and improvements,
and then tap on analytics data.
A bunch of scary looking, you know, words here.
Just look for the name of a specific app.
So if we start strolling analytics, analytics, analytics.
- So David's iPhone turned out to be
disappointingly healthy, and in good shape.
My iPhone, let's just put it right there, next to it.
And you can see here, chess, chess, chess, chess,
chess chess, chess, lots of chess.
So if I tap on any one of these,
you'll see, and we'll zoom in, SXC_CRASH(SIGKILL).
Exception type, it's a crash.
So the chess app is crashing on my phone.
You know an app has crashed when all of a sudden
you're using it, and you're back in the home screen,
looking at the icons.
It's not supposed to happen,
and it's not always a bad thing,
'cause the iPhone has different safeguards built in,
like if an app uses the CPU for too long,
the iPhone is supposed to kill that app.
But it doesn't always work perfectly.
I'm not gonna uninstall the chess app.
- Right, well there are a couple of things you can do
before you try to uninstall your app.
Check for an app update.
Maybe the developers saw there's an issue,
and they went in and they tried to fix it.
- Right, that'll happen a lot.
This is why they release these updates.
- I'm gonna back to the home screen by swiping up.
I'm gonna tap on the app store icon.
Loading.
Tap on your account icon, upper right hand corner
of the screen, and just scroll down here to,
here we go, automatic app updates.
Coming up, Twitter, Facebook, Venmo, DraftKings.
I saw that Twitter in there, I might, you know,
tap update to update Twitter app.
- Yeah.
We made some improvements in squashed bugs
to make Twitter better.
- Squashed the bugs.
- They did.
- If the app update doesn't fix the problem,
deleting and reinstalling the app could fix the problem.
Maybe there's a software file got corrupted,
kind of unlikely, but it is possible.
Show you how to uninstall an app.
I'm gonna go back to the home screen,
press and hold on the app you'd like to delete,
tap remove app, and then tap delete app.
Go back to the app store, find it, re-install it,
If that doesn't fix a problem with a specific app,
maybe it's time to delete, find an alternative.
But as you said, some apps,
that's just not an option, like chess.
- Yeah, I'm not gonna give up chess.
- Yeah.
- Another place to look in the settings app.
And this is kind of an easier way to look,
but it's not always as precise as the other way,
is in the battery section, in the settings app.
So let's go there.
- [David Lynch] All right, open settings,
go back to the main page of the settings apps,
just keep tapping back.
Battery.
- [David Payette] Battery.
Scroll down to your list of apps.
And, if you see any apps in here
that are using a disproportionately high amount of battery,
then those apps might be the reason why
your iPhone is getting hot.
Why?
Because iPhone gets hot because
the CPU revs up to 100%.
If the CPU's at 100%, it's using too much battery.
So this is a good way to diagnose that.
- Nothing super abnormal here.
Reddit, a lot of photos and videos are loading,
it's gonna use a lot of battery life.
Same thing with Twitter, Safari.
Exposure notifications are still killing me.
- Yeah, I turned them off.
- Always at the top.
- I turn them off.
I think that we were the only two people
in New York that used them.
But good for us.
- Good for us.
If you're in this section of the settings app,
and you see that home and lock screen
is using a lot of battery life,
it's not for me, but say this is one of the top results,
there might be an issue with the widgets on the home screen.
- Right, widgets keep getting more and more complex,
and apple keeps allowing third-party developers
to add widgets, so typically the Apple widgets are perfect.
They run perfectly with the iPhone,
but if you have a third party app widget,
maybe turn it off, and see if that fixes the problem.
- [David Lynch] Yes.
Next, let's check for an iOS update.
Keeps your iPhone running as efficiently as possible.
- Most of the time.
Let's go back to the settings app.
Main page, tap general, tap software update.
If an update is available, tap download and install.
- The reason Apple releases software updates,
just a little secret, a lot of the time,
is that they discovered there are bugs in the software,
and they don't wanna just release an update
for just the bugs, so they push out
some new features that they've been working on.
And they sort of like hide the bug underneath.
What's next, David?
- What's next?
Try restarting your iPhone.
- Yeah.
- All the programs running in your iPhone, apps,
shut down naturally, get a fresh start.
You might be able to fix a minor software problem there.
So go back to the general page in the settings app,
come down here and tap shut down.
Slide to power off will appear on the screen,
swipe it left to right, let your iPhone shut down.
- Right.
Why aren't we doing this in the video?
- Well, it's screen recording.
- [David Payette] There's a screen recording,
it would kill it.
- If you've one all these steps,
and your iPhone is still getting hot,
and it's not being left out in the sun,
might be a deeper software issue,
and we're gonna recommend resetting all settings.
- Right.
Reset all settings is kind of a magic bullet.
It's not perfect, but it does fix little software problems
that happen in the background of iPhones.
And this is a good catchall.
Unfortunately, it's a little bit of a pain,
because you're gonna lose your wallpaper,
and your home screen.
- Wifi passwords, Bluetooth devices.
- Yeah, you gotta reset a bunch of stuff.
- Bit of a nuisance, but I'd rather do that,
than have my iPhone get really hot, and break.
So, while you're here in settings, general,
let's tap reset, then tap reset all settings.
Enter your passcode, tap reset all settings again,
your iPhone will shut down, do the reset,
turn back on, and you'll be set.
- Yep.
- If reset all settings didn't work,
try a DFU restore, that stands for device firmware update.
- Right, they were gonna call firmware semi hardware,
but they thought that would be a little inappropriate,
but DFU restores the deepest type of restore
you could do on a phone, and fixes a little software issues
that you cannot otherwise diagnose.
Before you go to the Apple store with this problem,
do a DFU restore, because every Apple tech
will do one for you, before they replace your phone,
or consider anything else.
So make sure you have a backup before you do it.
Could just back it up to iCloud,
which is my preferred way, or use your computer.
- We'll link to a DFU restorative tutorial,
card above, description section below.
If that doesn't work, might have a broken phone.
- Right.
So, usually damage doesn't cause this,
but it can, especially if the battery gets damaged.
So, water damage, other types of damage.
- Dropping your iPhone off a cliff.
- Right. Cliff damage.
- Go for a hike, drop your iPhone, found it on the way down.
- And it's getting hot now.
- It's getting hot now.
- Yep.
It's probably not gonna be a software problem.
- Probably not. So, go to the Apple store.
They'll help you get it fixed.
Those are some ways to fix a hot iPhone.
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