ukdeals Looking for a cheap 100GB SIM deal in the UK? Mozillion is currently offering 100GB of 5G data every month for 24 months for just £126 upfront.
That works out at an effective cost of £5.25 per month — with no monthly payment to make after the initial £126.
The offer ends at midnight on Friday, 11 September 2026, so this is a limited-time deal.
🔥 Mozillion 100GB SIM Deal
| Deal | Details |
|---|---|
| Data | 100GB every month |
| Duration | 24 months |
| Upfront price | £126 |
| Effective monthly cost | £5.25/month |
| Calls | Unlimited UK calls |
| Texts | Unlimited UK texts |
| Network | Vodafone network |
| 5G | Uncapped 5G speeds |
| EU roaming | Included |
| Credit check | No |
| Price rises | No mid-contract price rises |
| Offer ends | 11 September 2026 |
Why this Mozillion deal stands out
The biggest attraction is the upfront pricing.
You pay £126 once and receive 100GB of data every month for two years. That’s a total of 2,400GB of data over the 24-month period.
At £126 for 2,400GB, the effective cost works out at only 5.25p per GB over the full term.
Mozillion also lists unlimited UK calls and texts, EU roaming, Wi-Fi calling, hotspot capability and the ability to keep your existing number as part of the plan.
£126 upfront vs monthly SIM deals
The upfront payment may suit people who have the money available now and don’t want another monthly direct debit.
For comparison, Mozillion’s standard 24-month 100GB SIM-only plan is currently listed at £13.95 per month, while this promotional preloaded offer works out at £5.25 per month.
That makes the promotional offer particularly interesting for heavy data users. It’s better than the previous offer for Mozillion 80GB SIM Only Deal UK
Check our full monthly sim only contracts recommendation here
Who is this deal good for?
This could be worth considering if you:
- regularly use a lot of mobile data
- stream music or video on your phone
- use your phone as a hotspot
- want to avoid a monthly SIM payment
- are looking for a cheap 100GB SIM deal
- have £126 available to pay upfront
One important thing to check
This is an upfront/preloaded promotional offer, rather than the normal monthly SIM contract.
Before buying, check the full terms on Mozillion’s product page, particularly the roaming allowance and the conditions applying to the 24-month preloaded service.
🛒 Get the Mozillion 100GB SIM deal
£126 upfront → 100GB every month for 24 months
Effective cost: £5.25/month
Offer ends midnight Friday, 11 September 2026.
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