100GB data • Uncapped 5G speeds • UK's best network
Hammer your data, and not your wallet. 100GB data plan, uncapped 5G/4G speeds and no credit check. Best for gaming, video streaming and browsing on the UK’s biggest and fastest 5G network.
Only £16p/m - 1-month plan
see plan
And the winner is: you.
Your calls, data, streaming and gaming sizzle across the UK’s 2025 Best Network winner
Firing up your phone
Buckle up. Unlike most, Mozillion features uncapped 5G speeds up to 10 x faster than 4G.
Shred your bills
Do the maths, below… better reliability, coverage and speed actually costs up to 50% less on Mozillion. Month in, month out.
SIM only plans
Every Mozillion plan includes:
• Award-winning reliability • Fastest uncapped 5G speeds
• Free EU roaming in 41 countries • No contract or credit check
Our Benefits
No credit check
Wi-Fi calling
Keep your number
Fixed price contracts
Hotspot enabled
EU roaming
Pros without the cons. How Mozillion compares.
We compare some of the top SIM-only deals available right now so you can make an informed choice!
Data-only SIMs: simple, flexible, affordable
A Data-only SIM plan focuses only on data, not calls or texts are included.
with Data-only you get your choice of data options: from 1GB per month to 100GB, all running on a 30-day rolling plan.
Whichever Mozillion plan you choose, we even throw in free EU roaming.
Signing up
Going Data-only couldn’t be simpler. Just choose the plan above that suits you best.
Once we have your order, we send you a new SIM card by first class post. Or you can download a digital eSIM, just select what SIM type you'd like at the checkout.
There is no credit check needed for Data-only deals.
Frequently Asked Questions
A couple of things.
First, check out any contract you may already have. It might pay you to sit tight until it finishes, and then move.
Or: you may find Mozillion’s savings, and our raft of other benefits, makes it worth paying to make the switch early.
And second, check that your phone is ‘unlocked’, meaning that it can work on any network. See the next question…
All mobiles work with Mozillion, but they need to be unlocked.
If you bought your phone new after December 2021, it should be unlocked anyway, but if not, you can ask your current network to help you unlock it.
Definitely. Apart from obvious factors such as price and reliability, many networks cap your speeds. The cheaper you go, the slower your data.
With Mozillion, we never cap our customers. Everyone gets full-throttle speeds, regardless of the plan they choose.
Simply, EE is the largest and best UK network phone network, and independent research bears this out. This means as a Mozillion customer, you get:
- - The Nation’s # 1 Network
- - The UK’s Most Reliable Network
- - The UK’s Fastest Network
- - The UK’s Best 5G Experience
- - The UK’s Best Network for Video
- - The UK’s Most Reliable Network for Mobile Gaming
- - The UK's Best Network for Calls
- - The UK’s Best Network for Data Performance
You can read the full findings from independent specialists RootMetrics here: RootMetrics Report
Take a personalised look at all the places where you live, work and hang out, here: Coverage Checker
Mozillion’s network covers an unrivalled 99% of the UK population. And all Mozillion plans give you 4G and 5G coverage where it’s available, using a compatible device.
Unlike many, Mozillion lets you use your plan in the EU pretty much like you do here. All your calls and texts in 41 European countries are still unlimited and free, up to the allowance of your plan. Also, you can also use a generous chunk of your data allowance free:
- - 1GB plans: up to 50% of your data allowance
- - 3GB-30GB plans: up to 25%
- - 100GB, 80GB, 500GB and unlimited plans: 25GB
The easiest way is to text ‘PAC’ to your current provider on 65075, with your existing SIM card in your phone.
They’ll text you back – usually instantly – with a PAC code to pass on to Mozillion. When you order your new Mozillion SIM, simply tell us the PAC and our system will action your transfer.
You can choose:
- - A physical Mozillion SIM to slot into your phone. It will fit any phone that uses standard, micro or nano cards.
- - Or, in newer smartphones, you can activate a digital eSIM.
Please note, there can be a short, one-time gap in service when you switch from one network to another.