Hi Nottall,
Unfortunately, there’s no way to change the design of the call interface or the red "End Call" button on iPhones. However, there are a few tips and settings you can use to avoid accidental calls or quickly cancel them:
1. **Use Airplane Mode**: If you realize you’ve made an accidental call, quickly swipe down from the top-right corner (on iPhones with Face ID) or swipe up (on iPhones with a Home button) to open the Control Center and turn on **Airplane Mode**. This will disconnect the call before it rings on the other end.
2. **Enable Silence Unknown Callers**: If you’re frequently making accidental calls, you might want to enable **Silence Unknown Callers** in your settings. Go to **Settings > Phone > Silence Unknown Callers**. While this won’t stop accidental calls, it minimizes their impact if the recipient isn’t in your contacts.
3. **Third-Party Apps**: Some third-party apps may offer features like a call confirmation pop-up before dialing, though these won’t integrate into the default Phone app.
4. **Provide Feedback to Apple**: If you’d like to request a feature like a delay or confirmation before dialing, you can submit feedback to Apple. Visit the [Apple Feedback page](https://www.apple.com/feedback) and suggest this enhancement.
I hope these tips help reduce accidental calls in the future!
Best regards,
DT