30GB Data • Unlimited calls & texts • Uncapped 5G speeds
Keep your number, slash your bills. 30GB data, unlimited talk and text, EU roaming, no credit check on the UK’s biggest and fastest network.
Only £9 p/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
WiFi calling
Keep your number
No mid-contract price rises
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!
SIM-only: simple, flexible, affordable
A SIM-only plan focuses on your calls, texts and data. You carry on using your existing phone, so your costs are far lower – there’s no new phone in the deal.
Mozillion data plans also save you money every month, so you win again. And with SIM-only you get real choice: from short 30-day rolling plans, to the massive savings that come with 24-month deals.
Whichever Mozillion plan you choose, we even throw in free EU roaming.
Signing and switching
Going SIM-only couldn’t be simpler. Just choose the plan above that suits you best.
If you also want to bring your number, text ‘PAC’ to 65075. Your current network will send you an automated code (usually in minutes). Have that ready to enter when you sign up with us. The one-off “porting” process can take between one and three working days to complete.
Once we have your order, we send you a new SIM card by first class post. Or, if your phone supports it, you can download a digital eSIM, just select which SIM type you'd like at the checkout.
There is no credit check needed for SIM-only deals.
Frequently Asked Questions
‘SIM-only’ means you can buy a new calls/data plan from any provider, without a phone being part of the deal. So if you’re happy with your iPhone or Android – but want a network that works better and costs less – Mozillion SIM-only could be the perfect solution.
Also, SIM-only means freedom. You can explore all the providers, and with Mozillion you can sign up for as little as one month and ‘test drive’ our network.
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: [LINK: 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%
- - 80GB 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.