Sorry. I am not an user of 436R. The new model number in the thread ,
interested me, to investigate. ( other models also available see link. )
Just trying to help members and users, with information, which they fail to access. using search engines like Google Yahoo Bing etc. Consider me as a Librarian, recommending the books you need!. Not necessary I should have read all of them, or an Expert in the subject..
Basic Idea is same . in a wifi network a trans/receiver at either end is required to send and receive Data. Some cellphone models may be incompatible with the service GSM/CDMA/freq /Operating system etc. Usually att the manufacturer's web site, upgrades are recommended.