Volume icon in Control Center

Hi MRBGermany,

Thank you for participating in the Apple Support Communities. If the icon on your volume in Control Center is too small, here are a few steps to try to see if they help:

1. Restart your device to see if the issue is still there: Restart your iPhone - Apple Support
2. Confirm that your device is up to date to rule out the older software: Update your iPhone or iPad - Apple Support
3. If the issue persists, reach out to Apple Support here: Contact - Official Apple Support

Have a great day.