Guides
Understand your SIM deal
Practical, jargon-free guides on choosing, switching and getting the most from your SIM.
Annual price adjustments explained
Every tariff rises once a year. Here's exactly how the increase is calculated on each network and how much notice you get.
5 min read · Updated 30 July 2026
Leaving early: cease fees and early termination fees
What it costs to disconnect before your term is up, and why a 30-day plan isn't always free to walk away from.
5 min read · Updated 30 July 2026
Roaming rates and fair usage
What each network charges per day abroad, where roaming is inclusive, and the fair usage rules that apply when you travel.
6 min read · Updated 30 July 2026
What 'unlimited' actually means on a SIM plan
Unlimited plans still have rules. Here's the fair usage position and what happens if you go well beyond normal use.
5 min read · Updated 30 July 2026
How pooled and shared data works
Aggregated tariffs and sharers both pool data across an account, but they work differently. Here's which suits which team.
6 min read · Updated 30 July 2026
How to keep your number when switching networks
The PAC code process, the timings and what to check before you switch.
4 min read · Updated 30 July 2026
How our prices compare with buying direct
We show the network's own published SIM only price next to ours so you can see the saving over the full term.
4 min read · Updated 30 July 2026
EE, Vodafone and O2: what actually differs
Cutting through the branding — the differences you can actually put a number on when choosing between the three networks.
5 min read · Updated 30 July 2026
How much data do you actually need?
A practical way to size your allowance using your own usage rather than guessing — and when unlimited is worth the premium.
5 min read · Updated 30 July 2026
Business SIM only plans explained
Ex VAT pricing, pooled allowances, account-level bundles and the contract rules that matter when you're buying for a team.
5 min read · Updated 30 July 2026
Check coverage before you buy
The one check worth doing before you choose a network — and the three places you should test, not just your home postcode.
4 min read · Updated 30 July 2026