Most android devices with an expanded usb port can use the the
Does anyone have any experience with the serial port on an android phone?
edit:as far as I can tell, we should be able to make this work with all htc android phones. For Motorola the only one that will work right now is the original droid. I do not know about the samsung or lg phones, I will look into it. also apparently people are having trouble making the serial port work on newer kernel releases.
edit2:sometimes reading things when you've been up all night makes you look stupid. The usb functionality does not need to be modified, rather the wired headset port needs to be disabled. You will not be able to connect a wired mic or speaker if the serial port is enabled. A much smaller issue in my opinion
here are a couple of pages I looked through in case anyone wants to check them out.