Looking at building your own 4G mast?
While not everyone has a field that may have 4G available in one corner of it, many of us have one window upstairs where you can get a better mobile signal and thus it is worth testing whether 4G is available as there are easy to use 4G routers that are designed to be left on all the time and provide Wi-Fi and ethernet around your home.
The Huawei B593 is a popular router and the advantage of buying it in an unlocked state is that you can try SIM cards from the various mobile operators. At £100 to £150 for the router, the expensive part will usually be the data charges from the 4G or 3G service provider which is one reason why we mention the EE SIM offers that give you two months of 100GB of data for just £10 when they are running.
There are external antenna available for the Huawei routers and retailers like solwise.co.uk have a range on indoor and outdoor antenna to make grabbing a better 3G or 4G signal easier.