## Getting the certificate onto the device The easiest way to get the certificate to the device is to use [the web app](@!urlTo("webapp.html")!@). In the rare cases where the web app doesn't work, you will need to get the __mitmproxy-ca-cert.pem__ file to the device to install it. The easiest way to accomplish this is to set up the Mail app on the device, and to email it over as an attachment. Open the email, tap on the attachment, then proceed with the install. ## Installing the certificate