Wifi says no internet connection but my computer connects to internet

Hi MargauxWhitbread,

Thanks for contacting Apple Support Communities!

It sounds like your iPhone is connected to the Wi-Fi network and it indicates there is no interest connection, correct?

If so, check out this resource which will show you how to troubleshoot your Wi-Fi connection on your iPhone: If your iPhone or iPad won't connect to a Wi-Fi network - Apple Support

"Get more help

• If you're connected to a Wi-Fi network but you can’t get online, try to use your Wi-Fi network on other devices. If you can't get online using your other devices, there might be a service outage. Call your cable company or internet provider for help.
• Try connecting to a Wi-Fi network in a different location. If your device can connect, you need to get help with your Wi-Fi network. If your device can't connect to any Wi-Fi networks, contact Apple.
• Update your Wi-Fi router with the latest firmware and make sure that the router supports your Apple product. For more information, contact the router's manufacturer."

Kind regards.