BlackBerry OS 10.2¶

BlackBerry OS up to 10.2.2102 does not accept a URL with protocol https:// in front of the server address. It will always tell you that it cannot login on your server. So instead of writing:

https://address/remote.php/carddav/principals/username

in the server address field, you have to write:

address/remote.php/carddav/principals/username