We have wifi in the caravan courtesy of 3. In our third year and now pay £8 for 10 gig download. We use it for planning purposes, e.g. places to visit, future trips etc. Also download magazines via our home library and books to read. We have 2 phones, one EE, one vodaphone and the 3 device. Never failed to get a signal on at least one of the devices. The position in the caravan determines signal strength . Doesn't work with all blinds down as you are then in a metal box. Don't forget that many proiders use other peoples poles. For example I'm on plusnet mobile, which is EE, wife is on talk mobile who use vodaphone poles Don't forget that you can download films at home and the replay them through the caravan tv. (We don't do that but still use dvds.)