Is Mozillion’s £126 100GB SIM Deal Worth It? 100GB for 24 Months at £5.25/Month
Is £126 upfront for 100GB of mobile data every month for two years actually a good deal?
Mozillion has launched a limited-time promotional SIM deal offering 100GB of 5G data every month for 24 months for £126 upfront.
There are no monthly payments after the initial purchase, making the deal equivalent to £5.25 per month.
But is it really a good deal — and who should consider buying it?
🔥 The deal at a glance
| Feature | Mozillion promotional SIM |
|---|---|
| Monthly data | 100GB |
| Contract period | 24 months |
| Total data | 2,400GB |
| Upfront cost | £126 |
| Effective monthly cost | £5.25 |
| Calls | Unlimited UK calls |
| Texts | Unlimited UK texts |
| 5G | Yes |
| Speed | Uncapped 5G |
| EU roaming | Included |
| Monthly payment | £0 after upfront payment |
| Offer ends | 11 September 2026 |
💰 How cheap is £126 for two years?
The easiest way to look at the offer is to spread the £126 payment across the 24-month term.
£126 ÷ 24 = £5.25 per month
Over the two years, you’ll receive:
100GB × 24 months = 2,400GB
So you’re effectively paying £5.25 per month for 100GB of data, or approximately 5.25p for each GB of data across the full 24 months.
That’s a particularly attractive proposition for anyone who regularly uses a large amount of mobile data.
📱 Who could benefit from this deal?
This SIM could make sense for several types of users.
Heavy mobile data users
If you regularly stream video, listen to music, use social media or download large files while away from Wi-Fi, 100GB a month provides a substantial allowance.
People who use their phone as a hotspot
If you occasionally connect a laptop or tablet through your phone, a 100GB allowance can provide considerably more flexibility than a low-data SIM.
Anyone trying to reduce monthly bills
The unusual part of this deal is that you pay the entire cost upfront.
After the £126 payment, there’s no £10, £15 or £20 monthly SIM payment for the next two years.
That could make budgeting easier for someone who prefers to pay for services in advance.
🤔 But there is a catch
The £5.25 figure needs to be understood correctly.
You don’t pay £5.25 each month.
You pay £126 upfront.
The £5.25 figure is simply the equivalent monthly cost when the upfront payment is divided over 24 months.
That means you need to have £126 available now.
If paying £126 upfront would put pressure on your finances, a conventional monthly SIM may be more appropriate even if its headline price looks higher.
📊 What about flexibility?
This is another important consideration.
A normal monthly SIM can sometimes be easier to change if your circumstances change.
With this promotional offer, you’ve paid for the 24-month allowance upfront.
Therefore, you should think about whether you’re likely to continue using the service for the full period before buying.
For someone who expects to use a SIM for two years, however, the upfront structure could be attractive.
🌍 EU roaming is included
Another useful feature is EU roaming.
That could make the SIM more appealing to people who travel to EU countries and want to continue using their mobile data while abroad.
However, always check the current roaming terms and any fair-use restrictions before travelling.
📌 How does it compare with a normal monthly SIM?
The promotional price becomes more interesting when you compare the total cost rather than just the monthly headline price.
At an equivalent £5.25 per month, the two-year cost would be:
£5.25 × 24 = £126
You therefore know the maximum basic cost of the promotional service from the beginning.
The trade-off is simple:
Pay £126 now → receive 100GB every month for 24 months.
For someone who has the money available and expects to use the SIM for the whole period, that’s potentially excellent value.
⚠️ Things to consider before buying
Before committing, consider these points:
1. You need £126 upfront
This isn’t a £5.25 monthly SIM.
2. It’s a 24-month offer
Think about whether you’ll still need the SIM throughout the two-year period.
3. Check the full terms
Check the latest terms for roaming, network coverage, fair-use policies and any restrictions before purchasing.
4. Check the network coverage where you live
A cheap SIM isn’t much use if the network doesn’t provide good coverage in the places where you need it.
🏆 Our verdict
For someone looking for a large amount of mobile data at a low effective monthly cost, Mozillion’s promotional offer looks particularly interesting.
You’re effectively getting:
2,400GB of data over 24 months for £126.
That’s equivalent to:
100GB every month for £5.25/month
The biggest downside is simply the £126 upfront payment and the commitment to using the service over the 24-month period.
If you’re comfortable paying upfront and expect to use a lot of mobile data, this is a deal worth considering.
🔥 Want the full deal?
We’ve covered the exact offer and how to get it here:
👉 Mozillion 100GB SIM: 24 Months for £126
Offer ends at midnight on Friday, 11 September 2026.
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