Can I switch my network and take out a SIM only deal?

You can change network provider and slash your phone bills with Mozillion provided you are out of contract with your existing provider. If you want to keep your old number, then this can be ported over to our network when you place your order, or any time after once you have received your Mozillion SIM.

Should I choose a SIM only deal?

Yes if you want to slash your phone bills, SIM only deals offer great savings over traditional phone contract deals. SIM only costs a fraction of the price of the airtime when bundled with a new phone on contract. You get far more data, calls and texts for a smaller monthly fee. In addition to the cost saving versus phone contract deals, SIM only plans offer very short term contracts so you are not tied in, these start from a 1 month rolling plan, through to 12 and 24 month terms. The longer you sign up for, the greater the monthly saving becomes. A Mozillion Unlimited SIM only deal could save you hundreds of pounds over 12-months compared to other network's plans. If you don't need to replace your phone, then a SIM only plan is the best way to make instant savings, these are perfect for families, businesses and individuals.

What are the disadvantages of a SIM only deal?

There is no real disadvantage as the savings are so great, unless you need a new phone, as SIM only plans do not include one.

What is the best SIM only deal?

The best SIM only deal is one that suits your needs and budget, simply look at you last few bills to find out how much data you use, then find a SIM plan with slightly more data. Consider what you are happy to pay each month, some SIM plans are very cheap but the speeds are throttled right back, so in effect you may have a new 5G phone with a 5G SIM plan – but the browsing speeds are worse than 3G. Find a SIM plan from a company that uses a quality network with uncapped speeds. The 4 large networks charge more money for more speed on the same plan – they may have 5 variations of an Unlimited SIM only plan, the cheapest may have speeds capped at 10Mbps only – 5G speeds can hit 650Mbps. All Mozillion SIM plans have uncapped speeds on the EE network. Data allowance is another consideration, you need enough to browse the web, for social media, streaming and gaming. To get the right amount of data, so you are not paying for more than you need, simply check your usage from you last phone bills or directly with your network provider. Some phones can also give you data usage in the settings menu. SIM only plans have 3 different terms, 1-month, 12-month, and 24-months, the longer period you agree to the greater the saving. Once the term is up you're free to move plans or swap network providers. 1-month rolling plans offer the greatest flexibility, as you can stay for as long as you like or keep switching networks after a 30-day period.

How simple is it to change networks?

Very simple if you are out of contract with your existing network provider, contact them to find out if you are out of contract or when it will end. If you wish to change network earlier than the end of your contact, the network may charge you an early termination fee to exit the contract. If you take a SIM only deal with a new number it will work as soon as you put it in your phone, if you are porting your number then this could take up to 1-3 working days from your order date. An eSIM will work instantly once downloaded.

When does the SIM only contract begin?

All SIM only contracts start from the date of despatch, normally a working day, Monday to Friday. An eSIM is sent by email, so almost instant, and plastic SIM cards are sent by 1st Class Royal Mail.

Do I lose network service when I change provider?

Switching to another network may cause a temporary loss of service whilst your number ports across to the new provider. However, once this has completed you can access the new network without any further loss of service. If you are not keeping your number, turn the phone off before switching SIM cards, turn back on once back in the phone, and browsing, calls and texting should be instant thereafter.

Do you need to have an unlocked phone to use with the SIM only plans?

If your phone is locked to a specific network, you will need to have it unlocked to use a SIM only deal on another network provider. Phones purchased using a traditional phone contract deal, are locked at point of sale, so they will only work with a SIM card from that provider. If your phone is network locked you need to contact your current provider for an unlocking code. Unlocking your phone is very straightforward, many providers offer this service at no cost or for a small admin charge, after meeting certain conditions, such as being out of contract or using the phone on contract for a minimum term of 6-months. To check the status of your iPhone: Settings – General – About – scroll to Network Provider Lock. No SIM restrictions displayed means it is unlocked. To check an Android phone: Settings – Connections – Network and Internet - Mobile network – Choose network. If only one network is showing the phone is locked, if several are displayed it is unlocked.

What is the best SIM only deal from a network provider?

Some of the best SIM only deals are offered by Mozillion, companies like Mozillion offer plans under their own brand but using one of the UK networks. Mozillion also has a dedicated customer service helpline number, unlike other budget SIM only providers, who only provide online support.

How do I get my PAC code?

This is very simple, the easiest method is to text the word PAC to 65075, and a code will be sent straight to your phone. Alternatively contact your network provider. Once you have your PAC code you can port your number to any new SIM only deal.

Can I get a 5G SIM only plan?

Yes, Mozillion offers SIM plans with a 5G enabled SIM card, so if you have a 5G phone it will automatically pick up the strongest signal available between 4G and 5G so you will always have a signal. If choosing from another supplier check that the SIM only plan includes a 5G enabled SIM card, you will also need a 5G device.

What is a Data-only SIM plan?

A data-only plan includes a data allowance but no call minutes or texts. They can be used with SIM/eSIM enabled devices such as tablets, laptops, mobile broadband dongles or mobile broadband routers.

What happens if I exceed my monthly data allowance?

If you run out of data mid-month, you won’t be charged for any further usage but also won’t be able to use any services that require data. You can purchase additional 1GB, 3GB or 10GB data add-ons by contacting us via email help@mozillion.com. You are also able to change price plans for your next billing period if you decide you will need more data each month.

What is Mozillion coverage like in my area?

Mozillion's network covers 99% of the UK population. Both 4G and 5G are included as standard, subject to coverage and using a compatible device. You can check Mozillion coverage in your area with our Coverage Checker.

Yes. All Mozillion plans include roaming use for data, calls and texts in 41 selected EU destinations. You can use up to 50% of your monthly data allowance on 1GB plans, 25GB on 500GB and unlimited plans and up to 25% of your monthly data allowance on all other plans.

Which countries can I use my roaming allowance in?

Spain, France, Portugal, Ireland, Greece, Poland, Italy, Germany, Netherlands, Bulgaria, Cyprus, Switzerland. Belgium, Sweden, Croatia, Hungary, Malta, Lithuania, Romania, Finland, Czech Republic, Norway, Slovakia, Austria, Denmark, Gibraltar, Iceland, Latvia, Estonia, Luxembourg, Guadeloupe, Slovenia, Liechtenstein, French Guiana, Guernsey, Isle of Man, Jersey, Martinique, Réunion, San Marino, Faroe Islands.

Can I have a new mobile number?

Yes. Your SIM will come with a new mobile number. If you decide not to transfer your existing number over, you can use this new mobile number instead.

Will the SIM card fit my device?

Our SIM cards fit all devices that use a standard, micro or nano SIM card. Whether you need a standard SIM, Micro SIM or Nano SIM – you simply pop out the right size from for your device. eSIM is also available.

How do I pay for my SIM?

Your SIM only plan is a simple subscription. Depending on the plan you choose, you’ll either pay all upfront or pay each month for the duration of your plan.

Can I tether with my SIM?

Yes, you can tether another phone, laptop or tablet to your phone.

What happens at the end of my plan duration?

If you’re on a pay monthly plan, at the end of your plan duration, your plan will continue on a monthly rolling plan until you either request to cancel it or move to a new plan. If you are on a 12 or 24 month plan, we will contact you towards the end of your contract to advise you of this. If you are on a Pay as you go Prepaid/Preloaded plan, your plan automatically ends at the end of the plan period. Towards the end of your Preloaded plan duration we will attempt to contact you with your options to move to a new plan. You can also contact us to change plans.

Can I keep my current mobile number?

Yes. If you have an existing mobile number you can transfer it over when you order your SIM card, simply enter the details at checkout and we’ll handle the rest. You will need a PAC from your current network provider which you can get by texting the word PAC to 65075. You can also choose to do this later after you order.

What happens if I exceed my monthly data allowance?

If you run out of data mid-month, you won’t be charged for any further usage but also won’t be able to use any services that require data. You can purchase additional 1GB, 3GB or 10GB data add-ons by contacting us via email help@mozillion.com. You are also able to change price plans for your next billing period if you decide you will need more data each month.

What is Mozillion coverage like in my area?

Mozillion's network covers 99% of the UK population. Both 4G and 5G are included as standard, subject to coverage and using a compatible device. You can check Mozillion coverage in your area with our Coverage Checker.

Yes. All Mozillion plans include roaming use for data, calls and texts in 41 selected EU destinations. You can use up to 50% of your monthly data allowance on 1GB plans, 25GB on 500GB and unlimited plans and up to 25% of your monthly data allowance on all other plans.

Which countries can I use my roaming allowance in?

Spain, France, Portugal, Ireland, Greece, Poland, Italy, Germany, Netherlands, Bulgaria, Cyprus, Switzerland. Belgium, Sweden, Croatia, Hungary, Malta, Lithuania, Romania, Finland, Czech Republic, Norway, Slovakia, Austria, Denmark, Gibraltar, Iceland, Latvia, Estonia, Luxembourg, Guadeloupe, Slovenia, Liechtenstein, French Guiana, Guernsey, Isle of Man, Jersey, Martinique, Réunion, San Marino, Faroe Islands.

Can I have a new mobile number?

Yes. Your SIM will come with a new mobile number. If you decide not to transfer your existing number over, you can use this new mobile number instead.

Will the SIM card fit my device?

Our SIM cards fit all devices that use a standard, micro or nano SIM card. Whether you need a standard SIM, Micro SIM or Nano SIM – you simply pop out the right size from for your device. eSIM is also available.

How do I pay for my SIM?

Your SIM only plan is a simple subscription. Depending on the plan you choose, you’ll either pay all upfront or pay each month for the duration of your plan.

Can I tether with my SIM?

Yes, you can tether another phone, laptop or tablet to your phone.

What happens at the end of my plan duration?

If you’re on a pay monthly plan, at the end of your plan duration, your plan will continue on a monthly rolling plan until you either request to cancel it or move to a new plan. If you are on a 12 or 24 month plan, we will contact you towards the end of your contract to advise you of this. If you are on a Pay as you go Prepaid/Preloaded plan, your plan automatically ends at the end of the plan period. Towards the end of your Preloaded plan duration we will attempt to contact you with your options to move to a new plan. You can also contact us to change plans.

Can I keep my current mobile number?

Yes. If you have an existing mobile number you can transfer it over when you order your SIM card, simply enter the details at checkout and we’ll handle the rest. You will need a PAC from your current network provider which you can get by texting the word PAC to 65075. You can also choose to do this later after you order.

What happens if I exceed my monthly data allowance?

If you run out of data mid-month, you won’t be charged for any further usage but also won’t be able to use any services that require data. You can purchase additional 1GB, 3GB or 10GB data add-ons by logging into your Mozillion Dashboard or contacting us. You are also able to change price plans for your next billing period if you decide you will need more data each month.

What is Mozillion coverage like in my area?

Mozillion's network covers 99% of the UK population. Both 4G and 5G are included as standard, subject to coverage and using a compatible device. You can check Mozillion coverage in your area with our Coverage Checker.

Yes. All Mozillion plans include roaming use for data, calls and texts in 41 selected EU destinations. You can use up to 50% of your monthly data allowance on 1GB plans, 25GB on 500GB and unlimited plans and up to 25% of your monthly data allowance on all other plans.

Which countries can I use my roaming allowance in?

Spain, France, Portugal, Ireland, Greece, Poland, Italy, Germany, Netherlands, Bulgaria, Cyprus, Switzerland. Belgium, Sweden, Croatia, Hungary, Malta, Lithuania, Romania, Finland, Czech Republic, Norway, Slovakia, Austria, Denmark, Gibraltar, Iceland, Latvia, Estonia, Luxembourg, Guadeloupe, Slovenia, Liechtenstein, French Guiana, Guernsey, Isle of Man, Jersey, Martinique, Réunion, San Marino, Faroe Islands.

Can I have a new mobile number?

Yes. Your SIM will come with a new mobile number. If you decide not to transfer your existing number over, you can use this new mobile number instead.

Will the SIM card fit my device?

Our SIM cards fit all devices that use a standard, micro or nano SIM card. Whether you need a standard SIM, Micro SIM or Nano SIM – you simply pop out the right size from for your device. eSIM is also available.

How do I pay for my SIM?

Your SIM only plan is a simple subscription. Depending on the plan you choose, you’ll either pay all upfront or pay each month for the duration of your plan.

Can I tether with my SIM?

Yes, you can tether another phone, laptop or tablet to your phone.

What happens at the end of my plan duration?

If you’re on a pay monthly plan, at the end of your plan duration, your plan will continue on a monthly rolling plan until you either request to cancel it or move to a new plan. If you are on a 12 or 24 month plan, we will contact you towards the end of your contract to advise you of this. If you are on a Pay as you go Prepaid/Preloaded plan, your plan automatically ends at the end of the plan period. Towards the end of your Preloaded plan duration we will attempt to contact you with your options to move to a new plan. You can also contact us to change plans.

Can I make Premium Rate Calls or send Premium Rate Texts/SMS?

Not at the moment. Mozillion plans don't include premium rate calls or texts.

Can I make/send Premium Rate Calls or Premium Rate Texts/SMS?

Not at the moment. Mozillion plans don't include premium rate calls or texts.

Does Mozillion support MMS?

We do not currently support MMS and these can be expensive for customers. A better alternative is to use messaging services.

Does Mozillion support MMS?

We do not currently support MMS and these can be expensive for customers. A better alternative is to use messaging services.

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Out of this world

Samsung Galaxy S25 Ultra with 100GB Data

From £42.50 a month
on the UK’s best network

24 month plan. Inclusive EU roaming. No mid-contract price rises.

See offer

CONNECT NOW

Latest iPhone. Greatest price.

iPhone 16 with 100GB Data

From £34.58 a month
on the UK’s best network

24 month plan. No mid-contract price rises.

See offer

SIM only plans

UK’s best network • 4G & 5G enabled • Uncapped speed

Our Benefits

No credit check

WiFi calling

Keep your number

No mid-contract price rises

Hotspot enabled

EU roaming

SIM Free & Contract Phones

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 16 Pro Max, iPhone 16 Pro, iPhone 16 Plus, iPhone 16 and the iPhone 16e.

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..

SIM type

Routers

Apple Phones

Samsung Phones

Google Phones

Other Brands

Out of this world

Samsung Galaxy S25 Ultra with 100GB Data

Affirm Finance

Latest iPhone. Greatest price.

iPhone 16 with 100GB Data

Affirm Finance

SIM only plans

UK’s best network • 4G & 5G enabled • Uncapped speed

500GB data 12-Months Unlimited calls & txts

£249.00

500GB data 24-Months Unlimited calls & txts

£349.00

100GB data 12-Months Unlimited calls & txts

£129.00

100GB data 24-Months Unlimited calls & txts

£179.00

80GB data 12-Months Unlimited calls & txts

£139.00

80GB data 24-Months Unlimited calls & txts

£169.00

30GB data 12-Months Unlimited calls & txts

£109.00

30GB data 24-Months Unlimited calls & txts

£149.00

500GB data 24-Months Unlimited calls & txts

£349.00

100GB data 24-Months Unlimited calls & txts

£179.00

80GB data 24-Months Unlimited calls & txts

£169.00

30GB data 24-Months Unlimited calls & txts

£149.00

500GB data 12-Months Unlimited calls & txts

£249.00

100GB data 12-Months Unlimited calls & txts

£129.00

80GB data 12-Months Unlimited calls & txts

£139.00

30GB data 12-Months Unlimited calls & txts

£109.00

100GB data 1-Month

£16.00 p/m

30GB data 1-Month

£12.00 p/m

10GB data 1-Month

£11.00 p/m

3GB data 1-Month

£9.00 p/m

1GB data 1-Month

£7.00 p/m

100GB data 1-Month

£16.00 p/m

30GB data 1-Month

£12.00 p/m

10GB data 1-Month

£11.00 p/m

3GB data 1-Month

£9.00 p/m

1GB data 1-Month

£7.00 p/m

Unlimited data 1-Month Unlimited calls & txts

£22.00 p/m

Unlimited data 12-Months Unlimited calls & txts

£21.50 p/m

Unlimited data 24-Months Unlimited calls & txts

£21.00 p/m

500GB data 1-Month Unlimited calls & txts

£20.00 p/m

500GB data 12-Months Unlimited calls & txts

£19.50 p/m

500GB data 24-Months Unlimited calls & txts

£19.00 p/m

110GB data 12-Months Unlimited calls & txts

£12.00

500GB data
12-Months
Unlimited calls & txts

500GB data
24-Months
Unlimited calls & txts

100GB data
12-Months
Unlimited calls & txts

100GB data
24-Months
Unlimited calls & txts

80GB data
12-Months
Unlimited calls & txts

80GB data
24-Months
Unlimited calls & txts

30GB data
12-Months
Unlimited calls & txts

30GB data
24-Months
Unlimited calls & txts

500GB data
24-Months
Unlimited calls & txts

100GB data
24-Months
Unlimited calls & txts

80GB data
24-Months
Unlimited calls & txts

30GB data
24-Months
Unlimited calls & txts

500GB data
12-Months
Unlimited calls & txts

100GB data
12-Months
Unlimited calls & txts

80GB data
12-Months
Unlimited calls & txts

30GB data
12-Months
Unlimited calls & txts

100GB data
1-Month

30GB data
1-Month

10GB data
1-Month

3GB data
1-Month

1GB data
1-Month

100GB data
1-Month

30GB data
1-Month

10GB data
1-Month

3GB data
1-Month

1GB data
1-Month

Unlimited data
1-Month
Unlimited calls & txts

Unlimited data
12-Months
Unlimited calls & txts

Unlimited data
24-Months
Unlimited calls & txts

500GB data
1-Month
Unlimited calls & txts

500GB data
12-Months
Unlimited calls & txts

500GB data
24-Months
Unlimited calls & txts

110GB data
12-Months
Unlimited calls & txts

110GB data
24-Months
Unlimited calls & txts

100GB data
1-Month
Unlimited calls & txts

100GB data
12-Months
Unlimited calls & txts

100GB data
24-Months
Unlimited calls & txts

80GB data
1-Month
Unlimited calls & txts

80GB data
12-Months
Unlimited calls & txts

80GB data
24-Months
Unlimited calls & txts

30GB data
1-Month
Unlimited calls & txts

30GB data
12-Months
Unlimited calls & txts

30GB data
24-Months
Unlimited calls & txts

10GB data
1-Month
Unlimited calls & txts

10GB data
12-Months
Unlimited calls & txts

10GB data
24-Months
Unlimited calls & txts

3GB data
1-Month
Unlimited calls & txts

3GB data
12-Months
Unlimited calls & txts

3GB data
24-Months
Unlimited calls & txts

1GB data
1-Month
Unlimited calls & txts

1GB data
12-Months
Unlimited calls & txts

1GB data
24-Months
Unlimited calls & txts

Unlimited data
24-Months
Unlimited calls & txts

500GB data
24-Months
Unlimited calls & txts

110GB data
24-Months
Unlimited calls & txts

100GB data
24-Months
Unlimited calls & txts

80GB data
24-Months
Unlimited calls & txts

30GB data
24-Months
Unlimited calls & txts

10GB data
24-Months
Unlimited calls & txts

3GB data
24-Months
Unlimited calls & txts

1GB data
24-Months
Unlimited calls & txts

Unlimited data
12-Months
Unlimited calls & txts

500GB data
12-Months
Unlimited calls & txts

110GB data
12-Months
Unlimited calls & txts

100GB data
12-Months
Unlimited calls & txts

80GB data
12-Months
Unlimited calls & txts

30GB data
12-Months
Unlimited calls & txts