How to free existing serial ports using Serial Splitter Mobile
Windows CE and Windows Mobile offer a limited number of serial ports (COM0-COM9) by default which could be below par, and some of them can be already used by other devices. In case of shortage of virtual serial ports you may disable existing ones and create virtual serial ports instead to be able to use them for your needs. To free existing port, please, choose real serial port you want to disable and click Please, note that released ports preserve the state even after system reboot.
In Windows Mobile Smartphone, please, select real serial port you want to disable, click left soft key, click "4" button and then "1" button: