The iOS version number may seem like just a technical detail, but it is actually an important element for iPhone users. It helps them know the compatibility of applications, take advantage of new features, solve technical problems, and make sure that their phone is running the latest available version. The operating system version can be checked on an iPhone in seconds, either from the phone itself or using a computer.

The easiest way... From iPhone settings

This method is the fastest way to find out what iOS version is installed on your phone. Here are the steps:
* Open the Settings app.
* Go to General.
* Tap About.
* The iOS version number will be displayed at the top of the page, directly below the phone’s name.
You can also tap on the version number to see the most important features and changes that came with this update.

Finding out the iOS version using a computer

If you have previously connected your iPhone to a computer, you can also find out the operating system version through it. On Mac devices running macOS Catalina or later, the Finder app is used, while older devices rely on iTunes.
For Windows devices, you need to install the Apple Devices app from the Microsoft Store. This app has replaced iTunes for managing Apple devices.

After setting up the computer, follow these steps:
* Connect iPhone to the computer using a USB cable.
* If a message appears on the phone, press Trust to allow the computer to access the device.
* On Mac devices, press Allow if prompted.
* Open Finder or Apple Devices or iTunes application depending on your operating system.
* Select the iPhone from the sidebar.
* Go to the General or Summary section.
* You will find the current iOS version and learn whether the phone is running the latest available update.

What should you do if iPhone doesn't appear on the computer?

If the computer does not recognize the phone, there are several steps that can be tried:
* Use a different USB cable.
* Connect the phone to another USB port.
* Update Windows USB drivers.
* Make sure you grant the computer access to the phone when prompted with the Trust message.

Why is it important to know the iOS version?

Knowing the operating system version helps in several ways, most notably:
* Ensuring compatibility of new applications with the phone.
* Knowing whether modern features are available on your device.
* Facilitating problem-solving steps.
* Confirming the need to install a new update for performance improvements and security patches.