All Network Deals on Three
Keep your phone. Save money. Switch to SIM Only with Olimit and start saving today.
Compare the best SIM Only deals now and see how much you could reduce your monthly bill.
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Use our filters to find the perfect plan — adjust data, contract length, and price to match your needs and budget.
Need help deciding? Explore our guide to getting a UK SIM card and see how SIM Only compares to a phone contract.
Olimit Tips & Tricks
How do I switch SIM only deal and keep my number?
1. Choose your new SIM Only deal
Compare the best SIM Only plans from top UK mobile networks. Once you find a deal that fits your needs, click through to the provider’s website to place your order.
2. Get your PAC code to keep your number
Want to keep your existing mobile number when switching networks? Text PAC to 65075 to get your code instantly — it’s quick, free, and works on all major UK networks.
3. Transfer your number to your new SIM Only plan
After signing up for your new SIM Only deal, give your PAC code to your new network. This will begin the number transfer process and automatically cancel your old contract. In most cases, you can enter your PAC code during checkout when switching SIM Only deals online.
Why is my SIM Only contract price increasing?
SIM Only plans often go up in price once a year — usually around March or April. These mid-contract price hikes used to follow the Consumer Price Index (CPI), but Ofcom now requires mobile networks to clearly state any increases in pounds and pence in your contract.
Not happy with the change?
Check when your current contract ends and set a reminder to switch. If you’re unsure about your status, text ‘INFO’ to 85075 — this free service will tell you whether you’re still in contract and if you can switch providers without paying an early exit fee.
Ready to switch?
Compare the best SIM Only deals at Olimit and take back control of your mobile bill.
List of SIM Only deals
Contract Length
Roaming Destinations
Additional
1p Mobile Sim Plan
46 Roaming Destinations
14GB
🇦🇹 Austria
🇵🇹 Azores (Portugal)
🇪🇸 Balearic Islands (Spain)
🇧🇪 Belgium
🇧🇬 Bulgaria
🇮🇸 Canary Islands (Spain)
🇭🇷 Croatia
🇨🇾 Cyprus (South)
🇨🇿 Czech Republic
🇩🇰 Denmark
🇪🇪 Estonia
🇫🇮 Finland
🇫🇷 France
🇬🇫 French Guiana (France – overseas)
🇩🇪 Germany
🇬🇮 Gibraltar
🇬🇷 Greece
🇬🇵 Guadeloupe (France – overseas)
🇬🇬 Guernsey
🇭🇺 Hungary
🇮🇸 Iceland
🇮🇪 Ireland (Republic)
🇮🇲 Isle of Man
🇮🇹 Italy
🇯🇪 Jersey
🇱🇻 Latvia
🇱🇮 Liechtenstein
🇱🇹 Lithuania
🇱🇺 Luxembourg
🇵🇹 Madeira (Portugal)
🇲🇹 Malta
🇲🇶 Martinique (France – overseas)
🇲🇨 Monaco
🇳🇱 Netherlands
🇳🇴 Norway
🇵🇱 Poland
🇵🇹 Portugal
🇷🇪 Reunion Island (France – overseas)
🇷🇴 Romania
🇸🇲 San Marino
🇸🇰 Slovakia
🇸🇮 Slovenia
🇪🇸 Spain
🇸🇪 Sweden
🇨🇭 Switzerland
🇻🇦 Vatican City
Vodafone Plus Euro Roam Sim Only
52 Roaming Destinations
25GB
🇦🇱 Albania
🇦🇽 Åland Islands
🇦🇹 Austria
🇧🇪 Belgium
🇧🇬 Bulgaria
🇮🇨 Canary Islands
🇭🇷 Croatia
🇨🇾 Cyprus (except Northern Cyprus)
🇨🇿 Czech Republic
🇩🇰 Denmark
🇪🇪 Estonia
🇫🇴 Faroe Islands
🇫🇮 Finland
🇫🇷 France (including Corsica)
🇩🇪 Germany
🇬🇮 Gibraltar
🇬🇷 Greece
🇬🇬 Guernsey
🇭🇺 Hungary
🇮🇪 Republic of Ireland
🇮🇲 Isle of Man
🇮🇸 Iceland
🇮🇹 Italy
🇯🇪 Jersey
🇽🇰 Kosovo
🇱🇻 Latvia
🇱🇮 Liechtenstein
🇱🇹 Lithuania
🇱🇺 Luxembourg
🇵🇹 Azores
🇵🇹 Madeira
🇲🇹 Malta
🇲🇨 Monaco
🇳🇱 Netherlands
🇵🇱 Poland
🇵🇹 Portugal
🇷🇪 Réunion
🇷🇴 Romania
🇸🇲 San Marino
🇸🇰 Slovakia
🇸🇮 Slovenia
🇪🇸 Balearic Islands
🇪🇸 Spain
🇸🇪 Sweden
🇨🇭 Switzerland
🇻🇦 Vatican City
🇳🇴 Norway
Asda Mobile Sim Only Deal
46 Roaming Destinations
5GB
🇦🇽 Aland Islands
🇦🇹 Austria
🇵🇹 Azores
🇪🇸 Balearic Islands
🇧🇪 Belgium
🇧🇬 Bulgaria
🇮🇨 Canary Islands
🇭🇷 Croatia
🇨🇾 Cyprus
🇨🇿 Czech Republic
🇩🇰 Denmark
🇪🇪 Estonia
🇫🇮 Finland
🇫🇷 France
🇬🇫 French Guiana
🇩🇪 Germany
🇬🇷 Greece
🇬🇵 Guadeloupe
🇬🇬 Guernsey
🇭🇺 Hungary
🇮🇸 Iceland
🇮🇪 Ireland
🇮🇲 Isle of Man
🇮🇹 Italy
🇯🇪 Jersey
🇱🇻 Latvia
🇱🇮 Liechtenstein
🇱🇹 Lithuania
🇱🇺 Luxembourg
🇵🇹 Madeira
🇲🇹 Malta
🇲🇶 Martinique
🇾🇹 Mayotte
🇳🇱 Netherlands
🇳🇴 Norway
🇵🇱 Poland
🇵🇹 Portugal
🇷🇪 Reunion
🇷🇴 Romania
🇸🇰 Slovakia
🇸🇮 Slovenia
🇪🇸 Spain
🇧🇱 St. Barthelemy
🇸🇪 Sweden
🇻🇦 Vatican City
O2 Sim Only Deal
48 Roaming Destinations
12GB
Austria Azores Belgium Bulgaria Canary Islands Croatia Cyprus Czech Republic Denmark Estonia Finland France Germany Gibraltar Greece Guadeloupe Guernsey Guyane (French Guiana) Hungary Iceland Ireland Isle of Man Italy Jersey Latvia Liechtenstein Lithuania Luxembourg Madeira Malta Martinique Mayotte Monaco Netherlands Norway Poland Portugal Réunion Romania Saint-Barthélemy Saint-Martin San Marino Slovakia Slovenia Spain Sweden Switzerland Vatican City
O2 Sim Only Deal
48 Roaming Destinations
25GB
Austria Azores Belgium Bulgaria Canary Islands Croatia Cyprus Czech Republic Denmark Estonia Finland France Germany Gibraltar Greece Guadeloupe Guernsey Guyane (French Guiana) Hungary Iceland Ireland Isle of Man Italy Jersey Latvia Liechtenstein Lithuania Luxembourg Madeira Malta Martinique Mayotte Monaco Netherlands Norway Poland Portugal Réunion Romania Saint-Barthélemy Saint-Martin San Marino Slovakia Slovenia Spain Sweden Switzerland Vatican City
Asda Mobile Sim Only Deal
46 Roaming Destinations
5GB
🇦🇽 Aland Islands
🇦🇹 Austria
🇵🇹 Azores
🇪🇸 Balearic Islands
🇧🇪 Belgium
🇧🇬 Bulgaria
🇮🇨 Canary Islands
🇭🇷 Croatia
🇨🇾 Cyprus
🇨🇿 Czech Republic
🇩🇰 Denmark
🇪🇪 Estonia
🇫🇮 Finland
🇫🇷 France
🇬🇫 French Guiana
🇩🇪 Germany
🇬🇷 Greece
🇬🇵 Guadeloupe
🇬🇬 Guernsey
🇭🇺 Hungary
🇮🇸 Iceland
🇮🇪 Ireland
🇮🇲 Isle of Man
🇮🇹 Italy
🇯🇪 Jersey
🇱🇻 Latvia
🇱🇮 Liechtenstein
🇱🇹 Lithuania
🇱🇺 Luxembourg
🇵🇹 Madeira
🇲🇹 Malta
🇲🇶 Martinique
🇾🇹 Mayotte
🇳🇱 Netherlands
🇳🇴 Norway
🇵🇱 Poland
🇵🇹 Portugal
🇷🇪 Reunion
🇷🇴 Romania
🇸🇰 Slovakia
🇸🇮 Slovenia
🇪🇸 Spain
🇧🇱 St. Barthelemy
🇸🇪 Sweden
🇻🇦 Vatican City
Asda Mobile Sim Only Deal
46 Roaming Destinations
5GB
🇦🇽 Aland Islands
🇦🇹 Austria
🇵🇹 Azores
🇪🇸 Balearic Islands
🇧🇪 Belgium
🇧🇬 Bulgaria
🇮🇨 Canary Islands
🇭🇷 Croatia
🇨🇾 Cyprus
🇨🇿 Czech Republic
🇩🇰 Denmark
🇪🇪 Estonia
🇫🇮 Finland
🇫🇷 France
🇬🇫 French Guiana
🇩🇪 Germany
🇬🇷 Greece
🇬🇵 Guadeloupe
🇬🇬 Guernsey
🇭🇺 Hungary
🇮🇸 Iceland
🇮🇪 Ireland
🇮🇲 Isle of Man
🇮🇹 Italy
🇯🇪 Jersey
🇱🇻 Latvia
🇱🇮 Liechtenstein
🇱🇹 Lithuania
🇱🇺 Luxembourg
🇵🇹 Madeira
🇲🇹 Malta
🇲🇶 Martinique
🇾🇹 Mayotte
🇳🇱 Netherlands
🇳🇴 Norway
🇵🇱 Poland
🇵🇹 Portugal
🇷🇪 Reunion
🇷🇴 Romania
🇸🇰 Slovakia
🇸🇮 Slovenia
🇪🇸 Spain
🇧🇱 St. Barthelemy
🇸🇪 Sweden
🇻🇦 Vatican City
ID Mobile Sim Only
50 Roaming Destinations
30GB
🇦🇹 Austria
🇦🇿 Azerbaijan
🇵🇹 Azores
🇧🇾 Belarus
🇧🇪 Belgium
🇧🇬 Bulgaria
🇪🇸 Canary Islands
🇭🇷 Croatia
🇨🇾 Cyprus
🇨🇿 Czech Republic
🇩🇰 Denmark
🇪🇪 Estonia
🇫🇮 Finland
🇫🇷 France
🇩🇪 Germany
🇬🇮 Gibraltar
🇬🇷 Greece
🇬🇵 Guadeloupe
🇬🇬 Guernsey
🇬🇫 Guyane (French Guiana)
🇭🇺 Hungary
🇮🇸 Iceland
🇮🇪 Ireland
🇮🇲 Isle of Man
🇮🇹 Italy
🇯🇪 Jersey
🇰🇿 Kazakhstan
🇱🇻 Latvia
🇱🇮 Liechtenstein
🇱🇹 Lithuania
🇱🇺 Luxembourg
🇵🇹 Madeira
🇲🇹 Malta
🇲🇶 Martinique
🇲🇨 Monaco
🇳🇱 Netherlands
🇲🇰 North Macedonia
🇳🇴 Norway
🇵🇱 Poland
🇵🇹 Portugal
🇷🇪 Réunion
🇷🇴 Romania
🇧🇱 Saint-Barthélemy
🇲🇫 Saint-Martin
🇸🇲 San Marino
🇸🇰 Slovakia
🇸🇮 Slovenia
🇪🇸 Spain
🇸🇪 Sweden
🇻🇦 Vatican City