As developers, we are constantly looking for ways to optimize and improve our apps. One aspect of iOS development that many of us struggle with is modifying the call screen. However, iOS 17 has introduced several new features that make it easier than ever to modify the call screen and create a seamless user experience.

What is the Call Screen?

Before we dive into how to modify the call screen in iOS 17, let’s first understand what it is. The call screen is a default feature in Apple’s iOS operating system that appears when a user receives a phone call or text message. It allows the user to quickly respond to the call or message without having to open the actual app or dialer.

The call screen can be customized by developers to include additional features and functionalities, such as the ability to send a quick reply or add a note to the call or message. By modifying the call screen, developers can create a more personalized and efficient user experience for their apps.

Getting Started with Modifying the Call Screen in iOS 17

Now that we understand what the call screen is, let’s take a look at how to modify it in iOS 17. The first step is to create a custom UIViewController subclass that will handle the call screen display.

To create a custom UIViewController subclass, open your Xcode project and go to File > New > File… In the left-hand panel, select “Cocoa Touch Class” under the “Source” category. Name your class something like “CallScreenViewController” and make sure to set the file format to Swift or Objective-C.

Customizing the Call Screen Header

The header of the call screen is an important part of the overall user experience, and it should be customized to match your app’s branding and design. To customize the header, you can use Auto Layout constraints to position and size the header elements such as the caller’s name and phone number.

Here are some tips for customizing the call screen header:

• Use a clear and legible font for the caller’s name and phone number.
• Consider using a different font or color scheme for the header to make it stand out from the rest of the call screen.
• Make sure to test your header design on different devices and screen sizes to ensure that it looks good across all platforms.

Customizing the Call Screen Body

The body of the call screen is where the user will interact with the call or message. Depending on the type of app you are building, you may want to include additional features such as buttons for quickly responding to a call or text field for sending a quick reply.

Here are some tips for customizing the call screen body:

• Use clear and concise language for any buttons or text fields in the body.
• Consider using icons or images to make the buttons more visually appealing.
• Test your call screen design on different devices and screen sizes to ensure that it looks good across all platforms.

Real-Life Examples of Call Screen Customization

Now that we have covered some best practices for modifying the call screen in iOS 17, let’s take a look at some real-life examples of call screen customization.

1. WhatsApp

WhatsApp is one of the most popular messaging apps in the world, and it has a well-designed call screen that allows users to quickly respond to calls or send quick replies. The WhatsApp call screen includes a header that displays the caller’s name and phone number, as well as a body that allows the user to easily access their contacts and send a quick reply.