I should of mentioned the kit I have as most of my trips are in the Highlands and I need to have an internet connection as often as possible. For mobile internet we currently have O2(best in home area), Vodafone(work mobile), mifi device with either EE or 3 sim for mobile internet, antenna for mifi(helps with poor signal), spare old smart phone(sometime helpful for setup). For wifi we have the iBooster kit which finds a wifi signal and if it is open shares it via the router in the van, dependent on free signal being available.
Needing all this tech kind of explains the issue.
Barry.