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eSIM Resources - Guides & Tools

Helpful resources including eSIM installation guides, supported devices list, data usage calculator, and more.

What is eSIM

An eSIM is a digital SIM that's built into most modern phones. It works like a physical SIM card, but without having to insert anything into your device. eSIMs offer tons of benefits, such as helping you avoid roaming fees and making it easy to switch between providers.

Installation Guide

Follow these steps to easily install eSIM on your phone. We recommend installing before departure - it activates automatically when you arrive.

Supported Devices

Only devices that are carrier-unlocked and support eSIM technology can use co:sim.

Data Calculator

A quick reference for what common activities cost in data, plus daily and per-trip estimates so you buy the right eSIM size the first time.

Use with AI Assistant

Claude, ChatGPT or any agent can search 190+ destinations, pick the right travel data plan and hand you a secure checkout — or pay by itself over open machine-payment protocols.

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200+ destinations, connected the moment you land. Not installed yet? Self-service refund within 30 days.

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  • Installation Guide
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