My iPhone 7 accessory was not supported,telling me to dismiss

Hello qudus130,

Thanks for reaching out to Apple Support Communities. We see you have some questions about your accessory not supported on your iPhone. We'd like to help. We also see you came from the article: If you see an ‘Accessory may not be supported’ alert - Apple Support

If you still have issues after the steps listed there, we'd recommend using the link at the bottom of that article to contact Apple Support.

Regards.