I can think of two easy solutions. One would be to synchronize Google Calendar and org-agenda and let Google Calendar manage the alarms/reminders in the phone. This already exists.
The other solution would be to develop an app which polls emacs/org-mode for alarms/reminders. AFAIK this doesn't exist but it would be pretty easy to make.
The other solution would be to develop an app which polls emacs/org-mode for alarms/reminders. AFAIK this doesn't exist but it would be pretty easy to make.