....we pretty well shelved our camper flat screen TV; WAY, WAY too bulky in a truck camper. Its been collecting dust in the closet for years now.
We use exclusively tablet devices (or, laptop). Those are thrown into a small back-pack and can accompany us anywhere (even hiking). Also, all our mobile devices (we have 4 smart phones collected over the years), even the light-weight laptop are set up for GPS navigation WITHOUT the need for a data connection or plan...
Its possible to get free-to-air TV broadcasts into your tablet (iPad) or laptop from devices like W i TV, TabletTV, or buy a TVstick, or some other satellite TV tuner for Android/tablet (if you want to bring sat. TV into your mobile device). We don't do satellite TV on the road...but we can receive free-to-air (FTA) TV on virtually any mobile device, within the FTA broadcast range.