Portable on is a modem which has a sim card n u install monthly or weekly or daily packages on it it might be unlimited or limited depends on ur choice the bad thing is the package is limited depending on ur choice the good thing is u take it wherever u want the wired one demo it's unlimited the usage n the money is fixed n cheap when compared to the portable one bcz the portable yearly unlimited is between 12-14k but the wired one is cheap or expensive depending on ur plan which u plan on buyin