Mobile connectivity is what allows your phone or tablet to connect to the internet when you’re not using WiFi. It relies on radio signals from mobile masts, and the strength of these signals vary depending on your location, the network you use and even the type of building you’re in.
This page explains how to check for the best coverage in your area, improve your signal and access affordable mobile data.
Help with mobile connectivity
If you’re struggling with mobile signal or the cost of mobile data, here’s how to quickly check your coverage, compare plans and access support.
Check mobile coverage in your area
Use a coverage checker to find out which mobile networks work best where you live, work or travel. We suggest Ofcom broadband and mobile coverage checker.
Compare mobile prices and plans
Once you know which networks offer the best signal for you, compare their prices to find the best deal. We suggest using trusted comparison sites, such as:
When choosing a plan, you should consider contract length, data limits, monthly costs and roaming options.
Get free or low-cost mobile data
If you’re struggling with the cost of mobile data, you may qualify for support. You can access:
- Reduced mobile tariffs
- If you receive certain benefits, you may be able to get low-cost broadband and mobile tariffs from major providers at around £10-£24 per month.
- Find a list of providers and their eligibility criteria here: What are social mobile tariffs and who is eligible? March 2026
- Free mobile data through the National Databank
- The National Databank makes free data (via a 12 month SIM card) available to anyone over the age of 18 from a low-income household.
- You can pick up a SIM at some Cambridgeshire Libraries. Find your nearest Library here on the ‘Getting access to the internet’ dropdown section: Digital help and support in libraries | Cambridgeshire County Council
Key terms explained
Helpful explanations for common words when it comes to talking about mobile:
These are generations of mobile technology:
5G – Fastest speeds and best performance
4G – Reliable for everyday data and calls
3G – Older technology being phased out across the UK
This describes how strong a mobile signal is in a particular area. Coverage varies between networks and locations.
The amount of internet you can use when not connected to WiFi (measured in gigabytes, GB)
The package you pay for each month or through pay-as-you-go. It covers your calls, texts and mobile data.
Mobile advice
If you or someone you know hasn’t had much experience with touch-screen devices, learning how to use a modern smartphone can be quite overwhelming. Green Smartphones have put together a guide, explaining some key smartphone basics, allowing first-time smartphone users of any age to get the most from their device. They’ve covered everything from the basics of using a smartphone to taking and sending photos, to the most useful smartphone apps.
Head to the following website to find out more: Smartphone Basics Explained – For Seniors & Beginners
