Phone gets heated when running my application

Question

When I use my application for awhile, I have noticed that the device gets hot. Apple devices usually get hot when running applications, so I want to know if there's a method to check if I have done something wrong in my application.

I don't think the Allocations tool in Instruments could help me diagnose the problem.

Allyl

Profile for CPU usage: too much CPU use is what heats up the phone, and eats up the battery too. – Baryram

Apple devices usually gets heated, but is there a method to measure this temperature and see if it has exceeded the maximum allowed temp by apple. – Allyl

Answer 1

Instruments can definitely help you solve this. Your device gets hot as a direct result of intense CPU activity, which Instruments can track and show you your CPU usage and memory allocations.

Idiom

Apple devices usually gets heated, so how do i know if my application is causing the heat ? and is there a method to check if the application has exceeded the maximum allowed temperature ? – Allyl

Just because the device gets hot doesn't mean that you're exceeding any max temperature, it just means your consuming a lot of device resources, which isn't always a bad thing, but will often result in loss of battery life for your user. Don't worry about a temperature threshold, I don't believe theres anything you can do programmatically that can cause the device to reach this limit. The overheat safeguards are triggered from something like leaving your iPhone in a black car on the beach all day. – Idiom

Side note, what model iPhone are you using? – Idiom

Well if your app is consuming enough resources to heat an iPhone 4 enough that you think it's a problem, you may want to rethink some of your allocations. – Idiom

Answer 2

For IOS check GPU consumption in XCode dev tools, which might cause heating apps while using.

Suppose your app has BackdropFilter Widget which is one of the reasons for increasing GPU because IOS consumes more GPU to render BackdropFilter Widget.

This works for me.

Isolde