Damn! no signal
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No 4G signal inside?

So, you have a weak 4G signal outside your property and no signal indoors?

What are your options? First, have you considered changing your mobile provider? that may be the simplest solution.
Otherwise, there are two methods of improving connectivity around the house.

1) 4G mobile phone coverage

For this you will need a 4G mobile signal booster (£200 => an-awful-lot-more). There are many on the market and the only things to ensure are:

  1. The booster is compatible with your mobile provider's transmissions (vital). Versions have either single frequency receptors or cover multiple frequencies, the more the higher the cost.
  2. The external antenna is suitable for your location, chosen carefully between omnidirectional, multi-directional or directional.
  3. The internal antenna and booster combination is powerful enough to cover the areas of the house you wish to get good reception.
  4. OFCOM have strict rules on the use of boosters - see here. Legal boosters must be designed to improve mobile phone coverage indoors only. They are to improve an existing 3G and 4G signal, so you can make calls, stream online content, send text messages, surf social media, etc.

If you want your broadband to be supplied through this connection you need to purchase any LTE SIM modem, ranging from £20 to £(many hundreds). This can be placed anywhere within the umbrella of your in-house 4G mobile signal. You then feed your 4G broadband around the house, or outside the house, just like land-line broadband, via WiFi or Ethernet or a combination.
You can even consider a cheap portable LTE modem that many find useful on your travels.

2) 4G broadband

For this you will need a 4G broadband router (MiFi or LTE SIM modem) but beware, cheap ones may not allow you to attach an outdoor aerial only working if you already have good reception. There's quite a choice out there from both mobile providers and the big names (in routers anyway) like Netgear, D-Link, TP-link etc. I would be wary of one from a mobile provider as this will (probable) lock you forever into their network. Independants usually offer more functons and flexibility but may need more consideration in setting up. Things to consider :

  1. The modem is compatible with the frequency/frequencies your mobile provider transmits on (vital).
  2. You choose a model that allows for connection to an external antenna.
  3. The external antenna is suitable for your location, chosen carefully between omnidirectional, multi-directional or directional.

You then feed your 4G broadband around the house just like land-line broadband by WiFi, Ethernet or a combination.

If you wish to make 4G phone calls you will have to do so via the WiFi (assuming you choose to have WiFi in-house) and, very important, your phone must be compatible with WiFiCalling (not all phones or phone packages are). Unfortunately, there's the added inconvenience that guests must also have a compatible phone/package and you will have to let them onto your WiFi using your password.


1) Lightning arrester (or surge protector)
Any external aerial on Coll needs lightning protection. Bad winters on Coll (remember 2014) can bring extensive thunder storms and lightning is a master at seeking out aerials. Lightning going through your expensive booster/modem will fry it.
The lightning arrester is fitted in the cable between the antenna and booster/modem and is connected to a good quality earth, either through your electricity supply or a copper rod in the soil outside.
Believe me on this one, I learnt the expensive way!

Lightning arrestor for 4G