Comparing Mozillion
vs Three
If you're looking to switch provider, choosing between Mozillion and Three will come down to what matters most to you — whether that's network performance, global connectivity, flexibility, or added extras.
How the networks compare
Both Mozillion and Three offer strong everyday connectivity, but they differ in how their services are delivered and the networks they rely on.
Three Network and Performance
Three is known for its strong focus on mobile data and unlimited plans, building much of its reputation around fast 4G and growing 5G connectivity. As one of the UK's major mobile networks, it operates its own infrastructure and continues expanding 5G coverage across towns, cities, and high-traffic areas.
Performance can vary depending on location, but Three generally performs best in areas with strong 5G availability and for users who rely heavily on streaming, gaming, or large data usage. Its plans are often geared towards data-first customers, although coverage consistency can still differ between urban and rural areas.
- 5G available across a growing number of UK locations
- Strong focus on unlimited data and streaming usage
- Operates its own UK mobile network infrastructure
- Coverage and speeds can vary depending on location and congestion
Mozillion Network and Performance
Mozillion keeps things straightforward by offering plans that run on the UK's Best Network while focusing more on flexibility, value, and everyday reliability rather than pushing users into premium-priced contracts. This gives customers the freedom to choose plans that suit how they actually use their phone, without paying extra for features they may never need.
For most users, the experience is built around dependable coverage, simple plan options, and competitive pricing across SIM-only, device, and bundled contracts. Mozillion puts more emphasis on accessible pricing and flexibility alongside modern connectivity features like 5G support where available.
- On the UK's Best Network, voted 12 years running
- Flexible SIM-only, device, and bundle plan options
- Focus on value and straightforward pricing
- Built around everyday usage
Staying connected abroad
Both Mozillion and Three take different approaches to roaming, with one focusing on built-in travel simplicity and the other leaning into cost-effective usage across supported regions.
Three Roaming and Travel Coverage
Three has traditionally been recognised for its roaming features, particularly with international usage, although the structure has changed over time depending on the plan and destination. Some roaming destinations remain included, while others now require daily roaming passes or additional charges depending on where you travel.
For customers who travel regularly, it is worth checking exactly what is included before heading abroad. European and worldwide roaming support is available across selected destinations, but the overall setup is now more plan-dependent than it once was.
- Roaming availability depends on plan and destination
- Selected destinations included across certain plans
- Additional roaming charges apply outside included areas
- International roaming across Europe and worldwide destinations
Mozillion Roaming and Travel Coverage
Mozillion keeps roaming refreshingly easy to understand. Every Mozillion plan includes EU roaming across 41 destinations, allowing customers to use calls, texts, and eligible data while travelling without needing extra setup or confusing add-ons.
For travel further afield, Mozillion also offers additional worldwide roaming through Wallet top-ups, alongside its dedicated Travel eSIM for over 200 destinations and a Global Travel eSIM that lets you stay connected across multiple countries with a single eSIM. It is designed to make staying connected abroad feel quick and hassle-free rather than something you need to plan around.- EU roaming included across 41 destinations
- Use calls, texts, and eligible data while travelling in Europe
- Worldwide roaming available through Wallet top-ups
- Travel eSIMs available in 200+ destinations worldwide
- Global Travel eSIM for seamless connectivity across multiple countries
Roam the world for less
You can save up to 90% on roaming charges with Mozillion's Travel eSIM — available in over 200+ countries worldwide.
What else do you get?
From rewards and entertainment extras to flexibility-focused benefits and cost-saving features, both providers take a slightly different approach to what they include alongside their plans.
Three Features and Added Perks
Three focuses heavily on data-led plans and digital features, with many of its perks built around connectivity, streaming, entertainment and flexible usage. Alongside its unlimited data plans and hotspot-friendly approach, Three also offers Three+ rewards, which gives customers access to discounts, presale tickets, weekly offers and brand perks.
Its added features are designed for users who spend a lot of time online, stream regularly, or want fewer restrictions around data usage. Depending on the plan, customers may also have access to roaming passes, multi-device usage features, and upgrade options.
- Unlimited data plans available across selected contracts
- 5G included on compatible plans and devices
- Hotspot usage supported across mobile plans
- Upgrade and device financing options available
Mozillion Features and Added Perks
Mozillion takes a more flexible and value-driven approach when it comes to added perks. Rather than building around traditional network extras, the focus is more on helping customers save money, stay flexible, and choose the setup that works best for them.
Alongside SIM-only plans and device bundles, Mozillion also includes features like Kill Your Bill, which lets customers put rewards from everyday spending towards their monthly mobile bill. It gives the whole experience a more practical, savings-focused feel rather than relying on the usual entertainment-style perks.
- Flexible SIM-only and phone bundle options
- Choice of refurbished and new devices
- Kill Your Bill rewards can reduce monthly costs
- Straightforward plans without unnecessary extras
Pick your plan, start killing it.
All Kill Your Bill SIM only plans include unlimited calls & texts, EU roaming, and uncapped 5G speeds on the UK's Best Network 2025.
- Kill Your Bill rewards
- Unlimited calls & texts
- Uncapped 5G speeds
- Free EU roaming
- Rewards roll over, never expire
- No mid-contract price rises
Compare both SIM-only deals
Compare both SIM-only deals available right now so you can make an informed choice!
| How they compare | Mozillion | Three |
|---|---|---|
| Monthly cost | £24 | £32 |
| Data | Unlimited | Unlimited |
| Mins & Texts | Unlimited | Unlimited |
| Uncapped Speeds | ✓ | ✓ |
| EU Roaming | ✓ | ✗ |
| Credit Checks | ✗ | ✓ |
| Network | Mozillion | Three |
| Trustpilot Score | 4.3 | 1.3 |
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
Reviews from Mozillion customers that switched from Three
Wish I'd switched to Mozillion earlier
"So easy to switch from three to this network, I was paying a lot more for the same deal so I'm very happy with the whole experience."
Read more →Company worthy of serious consideration
"Having been with Three for very very long time I was somewhat concerned switching to company I never heard of before. I was so wrong."
Read more →Best operator ever, very good signal.
"Top. 10/10. Can't be beat on price/quality/signal. I was on O2 (Three) but always struggle with internet signal, Mozillion it's just another level. 👍"
Read more →