Set Out Phone Certificate For Free

To view user certificates installed on your device (Android 8.0), go to: Settings > Lock Screen > Security > Other Security Settings > User. You will see a list of the certificates installed in this menu. If you click the name of a certificate, you can view more details about it and if necessary, remove it.

If you want to turn on SSL/TLS trust for that certificate, go to Settings > General > About > Certificate Trust Settings. Under "Enable full trust for root certificates," turn on trust for the certificate.

To root certificates on Android, visit Settings and click on "Encryption and Credentials." Once there, you can certificates to the user store. You can also certificates remotely if you use emteria. OS, an enterprise version of Android.

One possible cause of this error is that a self-signed certificate is installed on the server. Self-signed certificates aren't trusted by browsers because they are generated by your server, not by a CA. You can tell if a certificate is self-signed if a CA is not listed in the issuer field in our SSL Certificate tester.

Many times, this error occurs when the certificate installed on the email server isn't recognized by the Android device in question.

If the problem is that your CA is not trusted, then you may need to at least one intermediate certificate on your web server. Intermediate certificates help browsers establish that the website's certificate was issued by a valid root certification authority.

If you want to turn on SSL/TLS trust for that certificate, go to Settings > General > About > Certificate Trust Settings. Under "Enable full trust for root certificates," turn on trust for the certificate.