The esim worked well. Internet connection was very good, even in the mountains. Although the setup instructions could be a bit clearer. I install the esim before going abroad, and wasn't sure whet... See more
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Company details
- Mobile Network Operator
- Cell Phone Store
- Electronics Store
- Phone and Internet Service
- Telecommunications Service Provider
- Travel Aggregator
Written by the company
At WorldSIM, we believe staying connected should be simple, affordable, and stress-free—wherever you are in the world. Since 2006, WorldSIM has been a global leader in travel connectivity, offering eSIMs, SIM cards, and portable WiFi devices that help travelers avoid high roaming charges and stay online with ease. With customers in over 190 countries, we empower both leisure and business travelers to access fast, reliable mobile data worldwide. Our award-winning eSIM technology works with most modern smartphones and allows instant activation—no physical SIM required. Whether you’re hopping between countries or settling in for a longer stay, WorldSIM gives you the flexibility to stay connected on your terms. We’re proud to offer transparent pricing, flexible plans, and a commitment to great customer service. WorldSIM is trusted by millions of travelers and businesses who rely on us for affordable, borderless connectivity wherever life takes them. Discover the smarter way to roam with WorldSIM—because the world should never feel out of reach.
Contact info
WorldSIM, 73 CORNHILL, EC3V 3QQ, London, United Kingdom
- customerservice@worldsim.com
- www.worldsim.com
Replied to 42% of negative reviews
Typically replies within 24 hours
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Worldsim data only
This is the first time I used worldsim and I an so impressed. Easy to set up and such a good price. I will be using again.
I have been a World Sim customer for…
I have been a World Sim customer for more than 10 years - their service is excellent. Today my enquiry was solved quickly and easily thanks to Victor.
Super unreliable and incoming calls DO NOT WORK
I have had the worldSIM for 3 days now and it doesnt work properly. I am unable to recive calls on the number and my outgoing calls rarely get connected.
I have gone through trouble shooting with the online person 2 times and they have raised a ticket to the tech team with the promise that they will get back to me next day. It has been 3 days and still nothing.
The online chat people are polite but uselss when it comes to resolving the issue and now I have paid for a product which doesnt work for me.
Refund is also not an option, even though I am not recieving the service i paid for.
WOULD NOT RECOMMEND

Reply from WorldSIM
Excellent service with my query.
Cathy helped me set up and was very…
Cathy helped me set up and was very patient. All working now
the eSIM did not work at all during my…
the eSIM did not work at all during my trip. I was in constant contact with the support team and followed all of the troubleshooting steps they advised, but we were unable to resolve the issue. In the end, they apologized for the service failure, and I was forced to purchase a local SIM card instead.

Reply from WorldSIM
Got Technical Issue in Singapore
I have been in Singapore for few days short visit before riding coach to Penang, my phone was suddenly not able to connect to the local provider yesterday due to some technical issue. Worldsim could immediately respond my concern on live chat and eventually fix the technical issue for me.Good service.
always use WorldSIM
always use WorldSIM, good service and have always resolved any issues quickly
Esim
Very easy to install, this is the 5th time I’ve used this eSIM
Will defo use again.
Its very easy to sign up to world sim…
Its very easy to sign up to world sim and very cheap and reliable service
Would recommend it
Really good reception everywhere I went…
Really good reception everywhere I went including uludag mountain
Very good company
Fast efficient
Fast delivery and great customer…
Fast delivery and great customer support assist
Fantastic customer service
Fantastic customer service, I accidentally topped up the incorrect number but didn’t realise and could not get anything to work. The help team
Found the issue and transferred my credit. Great support. Highly recommend their network.
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