Fast Internet While Traveling

World leader in eSIM technology, providing uninterrupted internet connectivity on all continents.

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Countries Covered

180+

4G/5G Networks

Top-tier partners

Activation Time

Under 5 minutes

Faster Than a Rocket

Download the COSMOSIM app before you travel and set up your eSIM in just a few taps. No queues, no hidden fees — simply choose a package and go.

4G/5G ready

Instant activation

Regional packages

Local packages

See all packages

What We Offer

Our success is your satisfaction.

COSMOSIM Packages

Created based on real traveler experience, this package suits any of your trips. You can purchase internet packages at the best price (see prices in the app). Travel the world with fast and reliable internet.

Fast Internet in All Popular Countries

COSMOSIM uses mobile services only from leading providers in every country. This means you’ll always have high-speed internet access while traveling, with no interruptions.

Easy eSIM Installation

Our service works with eSIM technology. This means you don't need a new physical SIM card, and you can easily install our eSIM on your phone online. Detailed instructions are available in the app.

Check if your phone supports eSIM

You will download and activate the eSIM on your mobile phone via the COSMOSIM app. You will find simple instructions in the app. The eSIM provides you with Internet access (4G/5G) in more than 180 countries worldwide. Please note: To activate the service, your mobile phone must support eSIM.

Devices Compatible with eSIM

How COSMOSIM Works

Step 1

Step 2

Step 3

In the app, you select preferred package

First of all, check if your phone has eSIM support (visit link to check). Then, download the COSMOSIM application from Google Play or App Store and select the desired internet package in the application – regional or local (regional includes a group of countries close to each other), where the purchased package will provide you with uninterrupted high-speed internet from COSMOSIM. Packages are active for a different period of time, from 1 week to 1 month, until the megabytes are exhausted.

Contact

Frequently Asked Questions

Find answers to the most common questions before you travel.

When does the validity period of the package start?

The validity period of the package starts from the moment you start using the internet package in the destination country. The date of purchase of the package is not related to the start of the validity period. You can purchase the desired internet package anywhere, at any time and in any country.

When should I download the App, before going abroad or after arriving?

Where can I see the prices of internet packages?

What is an eSIM and how do I check if it is compatible with my phone?

How do I purchase an eSIM package?

What kind of internet connection do you provide?

Which countries do you support for eSIM packages?

Do you have customer support?

Ready to travel like a local?

COSMOSIM is owned by LLC "City Telecom", founded in 2009.