Cannot add Outgoing COM port for any android device
This is just based on a bit of research, not my own experience:

Android phones, unlike your Symbian phone which worked, do not expose a Hayes-command modem as a built-in externally accessible service. There may well be such an interface internally for communicating with the “baseband processor”, but in order to control it from another computer you will have to install an Android app and/or modified OS which forwards the commands it receives from an external source. I don't know whether such an app already exists.

(Further questions on how to get the scheme I described working might be better asked over at Stack Overflow as they would be essentially about programming Android.)