Torn between Smart SIM and Classic SIM? Want one but not the other? Check out the differences below to help make up your mind
Classic SIM (Starting from £13.50/month) 📲
Classic SIM is your primary SIM in the UK, providing everything you need for everyday mobile use
Network: Works exclusively on the Three network
Data: Available as 4GB, 10GB, or Unlimited data plans
Calls & Texts: Enjoy unlimited UK calls and texts
Roaming in the EU: Get 5 days of free EU roaming per trip. After that, it’s £2 per day.
Roaming outside the UK: Additional daily charges and usage caps apply depending on the country you’re visiting.
5G: Access to the UK’s fastest 5G network
SIM Type: Available as both eSIM and physical SIM
Mobile Number: You can keep your existing number or choose a new one
Classic SIM is great for you if you need a reliable, full-service mobile network in the UK with unlimited calls and texts.
Smart SIM (£10/month or £45/year) ⚡
Smart SIM is the ultimate second SIM. It works alongside your main SIM (from any network) to provide unlimited data on 500+ apps across all four major UK networks, plus free roaming in 180+ countries.
Networks: Works across EE, O2, Three & Vodafone networks in the UK.
Data: Get unlimited data only on 500+ supported apps
Calls & Texts: Calls and texts are not supported on the Smart SIM.
Roaming: Enjoy free roaming in 180+ countries, making it a great option for international travel
5G: 5G is supported in certain countries
SIM Type: Only available as an eSIM
Mobile Number: The Smart SIM does not come with a phone number
Helpful Tips and Additional Info 🤩
Choosing the Right SIM
Classic SIM: Best if you mainly use your phone in the UK and need full mobile services, calls, texts, and data.
Smart SIM: Ideal if you travel frequently or want a backup SIM for when your primary SIM has poor coverage. It keeps you connected using supported apps even when your main SIM isn’t working.
Data Needs
Classic SIM: Offers flexible UK data plans (4GB, 10GB, or Unlimited).
Smart SIM: Focuses on unlimited data for selected apps, perfect for staying online when your main SIM loses signal. Be sure to check that your favourite apps are included.
Number Requirements
Classic SIM: Lets you keep your existing UK mobile number and use calls and SMS.
Smart SIM: Doesn’t include a UK mobile number and can’t be used for calls or texts.
Roaming Considerations
Classic SIM: Includes 5 days of free EU roaming per trip. After that, or when roaming outside the EU, additional charges would apply.
Smart SIM: Provides cost-effective roaming, but only for selected apps within the 180+ supported countries.