100GB £3.50
a month
£84 upfront payment required.
On a 24-month plan, using the UK's Best Network.
Uncapped 5G speeds. EU roaming. No credit check.
Equivalent to £7 per month
T&Cs apply.
See DealSIM only plans
Every Mozillion plan includes:
• On the UK’s Best Network • Fastest uncapped 5G speeds
• Free EU roaming in 41 countries • No
contract or credit check • No mid-contract price rises
Unlimited data
12-Months
Unlimited calls &
txts
EU roaming
£78
£8.50
Unlimited data
24-Months
Unlimited calls &
txts
EU roaming
£90
£8.75
Unlimited data
24-Months
Unlimited calls &
txts
EU roaming
£90
£8.75
Unlimited data
12-Months
Unlimited calls &
txts
EU roaming
£78
£8.50
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!
We offer the brands that matter, including…
Apple iPhone
A design classic, a technical triumph, a brand that never stops innovating – around the world, more than 1.5 billion people own an iPhone. Naturally, Mozillion offers the pick of the range, including the latest iPhone 17 Pro Max, iPhone 17 Pro, iPhone Air, and iPhone 17.
Whether you choose new, good-as-new or Certified Refurbished, we’ll meet your needs and your budget.
Samsung Phones
With its ability to create spellbinding technology (have you seen the foldable Galaxy Z Fold 7?) Samsung is a fierce competitor with Apple. Optimised for the Android operating system, Samsung has equalled or even outsold Apple in its own back yard, with a range including the Galaxy S25 the Galaxy S25 Plus, the Galaxy S25 Ultra and that remarkable Fold range.
Google Phones
Google spearheaded the development of Android, and today this operating system’s 70% market share makes it the world’s favourite by some margin. It’s therefore no surprise that Google’s own phones are a major presence in the upper midrange, combining quality and functionality with robust operating and security updates. Highlights include the brand new range of Google Pixel 10 Pro, Google Pixel 10 Pro XL and Pixel 10..
Frequently Asked Questions
This is a Sim only plan, whereby you pay 50% of the total cost upfront, the remaining balance is paid monthly over the term of the plan. These plans are either 12 or 24-month terms, which are better value compared to Pay Monthly sim only plans.
Simply choose a plan, you then pay 50% of the total cost of the plan as one-off upfront payment along with your first month’s line rental, the remaining balance is paid monthly over the term of the plan, either 12 or 24 months.
These plans are available with a 12 or 24-month term only.
Unused data typically does not roll over month to month.
Yes — you can keep your number by porting it over using a PAC code from your current provider.
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.
The main benefit is a cost saving over our standard Pay Monthly SIM only plans. All benefits are otherwise identical, such as Uncapped 5G speeds, no credit check, no mid contract price increases plus EU inclusive roaming, using the UK’s best Network.
No credit check is necessary for these plans.
Our plans run on the same infrastructure as the UK’s best phone network — independently ranked #1 for overall performance.
That means as a Mozillion customer, you benefit from:
- 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
These rankings are based on independent nationwide testing by RootMetrics.
Read the full findings here: RootMetrics Report
All plan benefits are identical; the only difference is the price you pay.
Preloaded is when you pay the total cost upfront, Pay Monthly Plus is when you pay 50% upfront, and the balance of 50% paid monthly over 12 or 24-months.
Preloaded and Pay Monthly Plus offer savings over Pay Monthly plans, which also have 1-month rolling plans, unlike Preloaded and Pay Monthly Plus.
At the end of the term, you can take out another Pay Monthly Plus plan, or any other SIM only plan from Mozillion. We will notify you at least a month before your plan expires so you can decide what to do.