Just follow these very simple procedures
How to Fix Security Certificate Error on Android (How to Fix Security Certificate Error on Android)
A security certificate error usually appears on your Android phone when you visit a site that has a certificate problem. If you continue to get this error on all other sites, then there might be a problem with your phone.
The reason the above error appears is that your phone cannot validate the certificate. This happens when there is something wrong with the certificate of that site, your phone's date and time settings are not correct, or you are using an outdated version of the web browser.
Regardless of the cause, you can follow a number of procedures to bypass the certificate error on your Android device.
