My wifi say weak security

Hello Freddysabroso,

Thanks for using Apple Support Communities! We understand you are getting an alert on your iPhone about your Wi-Fi security settings. We are happy to help provide some guidance on this.

While you may need to reach out to the manufacturer of your Wi-Fi router if you have questions on how to make some of the changes, you can see some recommendations that Apple provides in this helpful article:

Recommended settings for Wi-Fi routers and access points

We hope this information helps.

Cheers!