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
- Mobile Phone Shop
- Electronics store
- Phone and internet services
- Telecommunications service provider
- Travel deals
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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Sam was very patient and kept trying to…
Sam was very patient and kept trying to resolve a long term issue which hopefully now is corrected permanently
Timely support
I contacted the support and they were very helpful in providing responses. Although I wasn't able to activate my eSIM as I am still in my home country, they have said it will automatically activate once I reach my destination with appropriate changes to phone settings being made.
100% recommend
I love world e sim! I’ve never had a problem and when I needed customer support, the staff were very quick in helping! Deffo recommend
Could not see my balance and phone out…
Could not see my balance and phone out and send texts , Victor was very quick in his response , very professional and courteous problem resolved very quickly
Received excellent advise and efficient…
Received excellent advise and efficient help via chat
this review is prior to me using the service will update after my travel regarding the connectivity and service
The staff were very helpful and friendly but…
The staff were helpful and friendly but my problem has not been resolved for the last 2 months
Amazing customer service
When I started the online chat Sam was right there, no hanging on the line for a response, my query was addressed and sorted within minutes. The team who work for Worldsim are amazing, nothing is too much trouble and confirmation messages/emails sent to verify any changes or updates to your account. I love these people, why can't other companies treat their customers this way it's awesome. Thanks everyone from a very happy customer.
Everything was awesome
Everything was awesome. Sam was really helpful. Thanks worldsim.
Cathy was very attentive and resolved…
Cathy was very attentive and resolved my issue very quickly and could confirm data roaming rates
Scam - eSIMs don't work
Twice now I have bought eSIMs through WorldSIM, that just don't work. About one year apart, and for two different countries. And they refuse to give a refund when contacted. Never again.
Very straightforward process and great…
Very straightforward process and great deals
Would definitely use again
Extremely poor product and service
Extremely poor product and service. I felt ripped off as nothing worked as described and I did not get what I paid for. The instructions seem simple but when they don’t work there is no 24/7 chat or contactable customer service like they say on their website. All they want to do is sell top ups. Much better products and services available from other suppliers.

Reply from WorldSIM
Happy happy
It works and it is reliable
Need a UK number for various apps and to be reached when abroad and of course in the UK. I have used WorldSim for the last 7 years. After a worldwide hiccup they set things straight and better than before.
Easy to set up and no fuss
So easy and reasonable solution
So easy and I am not sure why I didn’t explore this before
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