Hi, I have installed a CA-Cert onto the android device through: Settings > Security > Credential Storage > Install from device storage. The CA-Cert is visible and installed successfully. When I try to make an SSL connection via https:// I get: "This Connection is Untrusted" Technical Details: The certificate is not trusted because the issuer is not trusted. When I remove the CA-Cert I get the exact same problem, this suggests to me that Firefox is using its own list of CA's. Could you please verify the above (any proof would be great!) Many Thanks, Mitch.