Moved: This thread is more suitable in the Ubuntu forum and has been moved accordingly to help your thread/question get the exposure it deserves.
Wrt your question (I took the liberty of editing your subject to something more appropriate):
Originally Posted by jnic
Does anybody make a 4G USB dongle (no contract) that is compatable with 13.04?
same as with your other thread: if you already own such a dongle then plug it in and see what 'dmesg' returns as well as 'lsusb'.