4G SIM started in 2012, the year 4G arrived in the UK. Back then it tracked which towns had 4G and what the first data plans cost. Today it explains how to choose, set up and get the best from 4G data SIMs in routers and connected equipment.
What this site covers
- Choosing a data SIM for a router or device, including fixed IP and multi-network SIMs.
- How the UK networks work and what is changing.
- Reading signal values and using antennas properly.
- Choosing a 4G router, with reviews of individual models.
Posts from the early years are kept as an archive and marked with the year they were written, because they are a useful record of how UK 4G developed.
Who writes it
4G SIM is written by Nick Appleby. Nick has worked in UK telecoms since 1998, starting at BT, and has spent most of that time on cellular routers, data SIMs and the antennas that connect them for business and industrial sites. The aim is simple: explain how the networks and the kit actually behave, in plain English, so you can make a good decision without wading through jargon.
Links and products
Guides link to manufacturers and to retailers where you can see current products and prices, including Router Store. We only link to things we think are relevant to the guide you are reading.
Get in touch
Questions, corrections and SIM enquiries are welcome. Use the contact page or email sales@4gsim.co.uk.