Comparing Mozillion
vs Spusu
If you’re looking to switch provider, choosing between Mozillion and Spusu will come down to what matters most to you — whether that’s UK-focused flexibility and digital-first features, or a low-cost European provider built around simplicity and value.
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.
Spusu Network Coverage and Reliability
Spusu operates as a mobile virtual network operator, using established partner networks in each country it serves to provide mobile coverage. This allows it to focus on offering simple, low-cost plans with a strong value focus.
Performance is generally reliable for everyday use, with service quality depending on the underlying network in each region.
- Uses established partner networks in each country
- Focus on low-cost, simple and value-led mobile plans
- Reliable everyday connectivity for calls, texts and data
- Performance varies depending on local network infrastructure
Mozillion Network Coverage and Reliability
Mozillion operates on its own network powered by the UK’s Best Network 12 years running, giving customers access to strong 4G and 5G coverage across the country. This allows Mozillion to focus on delivering consistent performance and flexibility rather than managing traditional network infrastructure.
It is designed to provide a smooth, reliable experience for everyday use, particularly in areas where UK network coverage is strongest.
- On the UK’s Best Network, voted 12 years running
- Strong 4G and 5G performance
- Focus on value and straightforward pricing
- Reliable UK-wide coverage
Staying connected abroad
Both Mozillion and Spusu take different approaches to roaming, with one focusing on built-in travel simplicity and the other leaning into cost-effective usage across supported regions.
Spusu Roaming and Travel Coverage
Spusu offers roaming across a wide range of European and international destinations, with usage typically dependent on the specific plan and country you are travelling to.
Roaming is designed to be simple and cost-efficient, with usage drawing from your plan allowance in supported destinations and standard roaming rates applying where coverage is outside included areas.
- Roaming across multiple EU and international destinations
- Usage depends on plan and destination
- Designed for cost-efficient international connectivity
- Standard roaming charges may apply outside included regions
Mozillion Roaming and Travel Coverage
Mozillion keeps roaming straightforward by including EU roaming across 41 destinations on all plans, allowing customers to use their UK allowance while travelling in Europe without extra setup.
For travel beyond Europe, Mozillion also offers a Travel eSIM option providing data in over 200 destinations worldwide, designed for quick activation and easy connectivity abroad without needing a physical SIM.
- EU roaming included in 41 destinations on all plans
- UK allowance usable across Europe with fair usage limits
- Travel eSIM available in 200+ destinations worldwide
- Instant QR activation for easy setup abroad
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.
Spusu Features and Added Perks
Spusu keeps its approach minimal and cost-led, prioritising straightforward plans and predictable usage over additional layers of features. The emphasis is on delivering core mobile service without unnecessary complexity.
A supporting customer app is available in its operating markets, allowing users to manage their plan, monitor usage, and handle account settings directly from their device.
- Simple, value-focused mobile plans
- Core features prioritised over bundled extras
- Customer app for usage and account management
- Designed for affordability and predictable usage
Mozillion Features and Added Perks
Mozillion is built around a lightweight, digital-first experience where the focus is on control and flexibility rather than stacked extras. Plans are kept simple, with tools that make it easy to manage usage and stay on top of your account.
There’s also access to the Kill Your Bill rewards app, where users can earn rewards that can contribute towards reducing their monthly spend, depending on how they use the service. Optional extras like travel connectivity can be added when needed, rather than being bundled in by default.
- SIM-only, digital-first setup with simple plan management
- Kill Your Bill rewards app with usage-based benefits
- Optional add-ons such as travel connectivity
- Focus on flexibility and user control
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
How do you get set up?
SIM setup has become much more flexible in recent years, with both providers supporting modern mobile compatibility, their approach to digital convenience and activation can feel slightly different depending on how you prefer to use your device.
Spusu supports both physical SIM cards and eSIM, with eSIM activation available during the ordering process for compatible devices. Its setup is designed to be quick and flexible, allowing customers to get connected within minutes using a QR code.
Spusu also supports switching from a physical SIM to eSIM for existing customers, alongside compatibility with selected smartwatches and multi-number setups on supported devices.
- Physical SIM and eSIM both supported
- eSIM activation available within minutes via QR code
- Existing customers can switch from SIM to eSIM
- Compatible with selected smartwatches and supported devices
Mozillion offers both physical SIM cards and eSIM across its SIM-only plans, allowing customers to choose the setup that works best for their device. Physical SIMs are delivered by post, while eSIM can be activated digitally on compatible smartphones for a faster setup experience.
Its eSIM approach is designed around convenience and flexibility, making it easy for customers to get connected without waiting for a physical SIM to arrive.
- Physical SIM and eSIM both available
- eSIM supported on compatible smartphones
- Digital eSIM activation for quicker setup
- Flexible setup depending on user preference
Compare both SIM-only deals
Compare both SIM-only deals available right now so you can make an informed choice!
| How they compare | Mozillion | Spusu |
|---|---|---|
| Monthly cost | £24 | £14.90 |
| Data | Unlimited | 100GB |
| Mins & Texts | Unlimited | Unlimited |
| Uncapped Speeds | ✓ | ✓ |
| EU Roaming | ✓ | ✓ |
| Credit Checks | ✗ | ✗ |
| Network | Mozillion | Spusu |
| Trustpilot Score | 4.3 | 3.9 |
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 Spusu
Ported from Spusu
"Ported from Spusu. Wanted to stay on the EE network, but Mozillion were significantly cheaper. Port only took 2 days. Very impressed thus far.."
Read more →5 star service
"I did change from spusu to mozillion. Received the sim on time. Change over was really smooth. No probems with tethering data, which i had problems with spusu. 100gb /£10 every month is worth as well. Hope they will release an app for the sim card soon."
Read more →Easy switch from Spusu
"Easy switch from Spusu. I had to change network for Google Pixel 6a to have wifi calling Mozillion appears to work well and the wifi calling works."
Read more →