Mozillion is a UK SIM-only provider with a wide range of plans, from 1GB up to unlimited data. Every plan listed below includes unlimited calls and texts and EU roaming, and you can choose how you pay: a rolling 1-month plan, a one-off payment for 12 or 24 months, or Pay Monthly Plus, where you pay part of a 24-month plan upfront and the rest monthly.
Affiliate disclosure: we may earn a commission if you buy through links on this page, at no extra cost to you.
Prices last checked: 9 October 2026. Prices and offers can change, so always confirm the current terms on Mozillion’s website before you buy.
Want to compare Mozillion with other providers? Use our SIM Plan Finder to see Lyca Mobile, Lebara and Mozillion plans side by side, or read our Lyca Mobile and Lebara guides.
How Mozillion plans work
All the plans below are SIM only, so you keep your phone and swap the SIM. The main differences are the amount of data and how you pay:
- 1-month rolling: you pay every month and can change or leave after each month.
- Pay as you go, 12 or 24 months: you pay once for the whole period. The monthly equivalent is lower than the rolling price, but you pay more upfront.
- Pay Monthly Plus (24 months): you pay a first payment today, then 23 smaller monthly payments.
1-month rolling plans
Unlimited calls and texts and EU roaming are included on every plan.
| Data | Price |
|---|---|
| 1GB | £3.50 a month |
| 3GB | £4 a month |
| 10GB | £7 a month |
| 30GB | £9 a month |
| 80GB | £12 a month |
| 100GB | £13 a month |
| 150GB | £15 a month |
| 210GB | £16 a month |
| 260GB | £17 a month |
| 310GB | £20 a month |
| Unlimited | £23 a month |
Pay as you go: one payment for 12 months
You pay once for the whole year. Unlimited calls and texts and EU roaming are included.
| Data | One payment | Equivalent per month |
|---|---|---|
| 1GB | £48 | £4 |
| 3GB | £54 | £4.50 |
| 10GB | £72 | £6 |
| 30GB | £78 | £6.50 |
| 80GB | £84 | £7 |
| 100GB | £90 | £7.50 |
| 150GB | £108 | £9 |
| 200GB | £120 | £10 |
| Unlimited | £240 | £20 |
Mozillion also has other large-data plans, so check its website for the full 12-month range.
Pay as you go: one payment for 24 months
You pay once for two years. Unlimited calls and texts and EU roaming are included.
| Data | One payment | Equivalent per month |
|---|---|---|
| 1GB | £84 | £3.50 |
| 3GB | £96 | £4 |
| 10GB | £120 | £5 |
| 30GB | £132 | £5.50 |
| 80GB | £144 | £6 |
| 100GB | £156 | £6.50 |
| 150GB | £180 | £7.50 |
| 200GB | £192 | £8 |
| Unlimited | £360 | £15 |
A one-off payment can be good value, but you pay for the whole period at the start. Check Mozillion’s terms on what happens if you want to cancel or change plan before the period ends.
Pay Monthly Plus: 24 months, part upfront
You pay a first payment today, followed by 23 monthly payments. The total is the same as paying for 24 months in one go.
| Data | Upfront today | Then 23 payments of | Equivalent per month |
|---|---|---|---|
| 10GB | £62.50 | £2.50 | £5 |
| 30GB | £68.75 | £2.75 | £5.50 |
| 80GB | £75 | £3 | £6 |
| 100GB | £81.25 | £3.25 | £6.50 |
| 210GB | £87.50 | £3.50 | £7 |
| 260GB | £93.75 | £3.75 | £7.50 |
| 310GB | £100 | £4 | £8 |
| Unlimited | £130 | £10 | £15 |
What does “or FREE every month” mean?
Next to the prices, Mozillion shows “or FREE every month”. This refers to its Kill Your Bill rewards. You buy gift cards for well-known retailers through the Mozillion app and earn a reward that is credited to your phone bill. Mozillion says rewards can be up to 17% of your spending and that any unused credit rolls over to the next bill.
Whether your bill drops, or reaches zero, depends on how much you spend at participating brands each month, so treat the listed price as what you pay if you do not use Kill Your Bill. Check the details on Mozillion’s Kill Your Bill page before you rely on it.
How to choose the right plan
- Check your real data use. Look in your phone’s settings for how much mobile data you used over the last few months. Many people use far less than their plan allows.
- Decide how you want to pay. A rolling 1-month plan is the most flexible. A one-off payment for 12 or 24 months lowers the monthly equivalent, but costs more upfront.
- Compare the total cost. Multiply a monthly price by the months you plan to stay, and compare it with the one-off and Pay Monthly Plus totals.
- Check your current contract. If you are still in a contract, leaving early may cost you.
- Keep your number. Text PAC to 65075 to get a Porting Authorisation Code from your current provider, then give it to Mozillion when you switch.
FAQ
Does Mozillion include EU roaming?
Every plan on this page shows EU roaming as included. Check Mozillion’s website for the fair usage limits that apply.
Are calls and texts unlimited?
Yes, every plan listed here includes unlimited calls and texts.
Can I keep my phone number?
In most cases, yes. Request a PAC code from your current provider by texting PAC to 65075, then give it to Mozillion when you sign up.
Is a one-off payment cheaper than paying monthly?
The monthly equivalent is lower than the 1-month rolling price on most plans, but you pay for the whole period upfront. Compare the total cost before you choose.
Will switching definitely save me money?
No one can promise that. Savings depend on what you pay now and how you use your phone. Compare your current bill with the plan you are considering.
Where can I check the latest prices and terms?
Always on Mozillion’s own website, as plans and offers can change.
Affiliate disclosure: UKSmartMoney.co.uk may earn a commission if you click a link and buy through our partners, at no extra cost to you. This helps us keep the site free. We aim to keep information accurate, but offers change, so please check the provider’s website for current terms. Savings are not guaranteed and depend on your own circumstances.
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One response to “Mozillion SIM Only Plans UK: Prices, Data and Kill Your Bill Explained (2026)”
[…] Read the full plan guides: Lyca Mobile SIM plans, Lebara SIM-only plans and Mozillion SIM-only plans. […]