Data usage on 4g router
I have just purchased a iogiant 4g router to use when I am away. I installed my new smarty sim on Friday to test it st home in the UK and have brought it away with me. I initially bought a 2mb plan, which I know is very small but just initially want to prove that I could get a reasonable signal and speed. I connected it yesterday evening (Saturday) and did some very light web browsing I had a message this morning (Sunday) to say all data is been used. How strange when I only have 5mb plan on my phone and very rarely go near that in a month. Anyway I opted to put another 10mb on my smarty account to get me through the week but having watched 2 hours of low resolution tv the data has been used up 12 go in a matter of 3 hours! I only have a fire stick and iPad connected to it and no major updates have taken place in this time. The thing that I should add is that I am in the EU but that should be included in my plan. Reading on various internet sites I can see that lots of people are having similar high data issues with 4g routers but have not seen a definitive solution/reason. Is anyone aware of the solution/reason.