WorldSIM 4G International SIM Card

Stay in contact when you travel with a prepaid 4G international SIM card and reduce your roaming charges by up to 85%.

✔ 4G SIM International card
✔ Super competitive rates for voice and data
✔ Prepaid Service - No contract - Top up online anywhere in the world
✔ Free incoming calls in over 110 of the most popular countries
✔ Coverage in over 190 countries
✔ Add data bundles for even cheaper data rates
✔ SIM works in any unlocked handset and compatible with all SIM sizes
✔ Comes with free UK mobile number
✔ Roam with your existing number using our Virtual Numbers service
✔ Trusted roaming solution with 24/7 Customer Service

Delivery Info
In stock

Add Pay As You Go Credit to WorldSIM 4G International SIM Card

Select the amount of credit you would like.
The more you add the cheaper the price!

Top Up Validity is 1 Year.

Total Cost: £0


Benefits of our International SIM Card

4G SIM Card
Our new and improved 4G SIM card offers faster data and improved connectivity.

Data Bundles
Once you receive your International SIM you will be able to add international data bundles up to 4GB, for over 100 countries, which can save you a fortune on data roaming!

Add Unlimited Numbers to Your SIM
Our International SIM card has a UK (+44) phone number. You can add more phone numbers to your WorldSIM with our virtual number service.  Choose phone numbers from over 50 different countries.

More Coverage
As our SIM is a global SIM card we offer more coverage than the average SIM. With a WorldSIM international SIM card you can stay connected in 200 countries.  

These are our UK national tariffs

  • Mobile & Landline
  • Voicemail
  • Internet
  • SMS
  • International SMS
We offer cheap international calls & roaming

Where are you traveling to?









Buy sim Now



Pre-paid travel SIM card

This Prepaid International SIM card gives you piece of mind as you avoid high roaming charges leaving you to enjoy your trip.

Top up anytime, anywhere

You can top up your WorldSIM or buy a bundle plan anytime of the day online at or by calling our Customer Services from your WorldSIM for free by dialling 190

Online billing

Manage your account online. You can see exactly how much you’ve spent, view itemised billing and you can access online help.

24 Hour customer service

Our customer service teams are available 24 hours, 7 days a week so you can always get help when you need it. We speak several languages and also have online help for immediate assistance.

Works in all unlocked phones

Our 4G global SIM card is compatible with all unlocked mobile handsets, you can use your WorldSIM global SIM card in any handset that uses normal, micro or nano SIM cards.

Call through technology

Other travel SIM cards operate on call backs, where you make a call, get cut off and then are called back within a minute. With the WorldSIM international SIM card the majority of destinations are called and connected immediately -just like on your normal

One SIM, multiple numbers

Get a UK (+44) mobile number on your SIM card. And other countries number from my account section at nominal price.

Premium quality voice calls

We use Tier 1 carriers for crystal clear calls. WorldSIM do not compromise on voice quality in order to bring you low rates.

Roam with your existing number

Add multiple numbers to your WorldSIM global SIM card

You can add multiple phone numbers to your WorldSIM roaming SIM card; our SIM cards already come with a UK number but if you want to add other countries as well there are over 50 countries to choose from. If you live in any of these 50 countries you can use this service to roam on your existing number without roaming charges. There is no limit to how many numbers you can add to your SIM.

Find out more

Who is it for?

What people are saying about WorldSIM

Read about what people think about us, our service and our products


Read our Award Winning Travel Blog

Discover unique destinations, read about the best travel apps and smart money saving tips

Kick ass travel accessories for tech lovers
5 Expensive travel mistakes you are probably making
5 Places You Have Never Heard of But Will Want To Go To When You Read This
Work Professional Travel Accessories
8 Ways to get fit with a smartwatch