I have to split my time between Thailand where I'm married and the UK where I still have family and work. In the UK I have no broadband so I use an Osprey mini 2 mobile unit from EE. I have a Samsung Galaxy Tab S and I want to use it to show pictures, my own videos and possibly downloaded content on the BBC iPlayer on 2 TVs (not at the same time). Neither are equipped for this so I was considering Chromecast. The issue is the need for a WiFi connection. I don't want to stream content from the internet although it's possible I may occasionally want to show web pages or YouTube. Can I use my mobile hotspot to connect and mirror my tablet screen without using my data allowance? I've seen lots of information about Chromecast but nothing that really matches my situation.