SSL Cert - Mobile Friendly

[sugiggs]

We are currently using wildcard SSL from Digicert and it is not trusted on Android.

Anyone can recommend me issuers which are trusted by almost all (if not all) current popular smart phones?

[mrdebian]

Check out the following one, it works on most of the mobile devices.
QuickSSL premium certificate

[bdial]

where is it not trusted? I just accessed our zimbra web interface from my droid which uses a digicert wildcard certificate and it came up valid. i think i have ssl disabled for the activesync though.