there are two possibilities:

1) If your SE phone supports the HID files and can act as a Bluetooth 
keyboard, you can make use of the Hotkey Remote for limited control 
over your Mac. You can find the HID file on the "Supported mobile 
phones" page.

2) If the P1i has sufficient support for HTML, AJAX and CSS 3, you may 
be able to use the AJAX Remote through a TCP/IP connection between 
your Mac and your phone via i.e. WLAN.

In both cases, please make use of the demo version before making a 
purchase, as I do not own a P1i and thus can't give you any definitive 
information - just ideas.

Best regards, 
Felix