Everything You Need to Know About Travel eSIMs
Learn how eSIMs work, compare your options, check device compatibility and get connected with confidence.
New to eSIMs? Begin with these essential guides.
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eSIM Explained (2026): What It Is, How It Works, and Whether You Should SwitchTo determine if your phone supports eSIM using the *#06# method,look for an EID (eUICC Identifier) alongside the IMEI. If an EID is displayed, your phone is eSIM-capable. If not, your device likely doesn't support eSIM.
For most Calico Link travel eSIMs, the validity period starts when the eSIM first connects to a supported local network at your destination. You can install the eSIM before departure and keep the eSIM line turned off until you are ready to use it. Please check the product description for any plan-specific exceptions.
Yes, many eSIM plans include a phone number and support call and SMS services, just like traditional SIM cards. However, some eSIMs are data-only, meaning they don't provide voice or SMS capabilities. It's important to check the details of your eSIM plan with your carrier or provider to confirm whether it includes these features.
Yes, eSIMs generally support hotspot functionality, allowing you to share your device's cellular data connection with other devices, like laptops or tablets.
Not always. While your eSIM plan may support regular text messages, banks and some service providers may block OTP or MFA codes sent to non-identity-verified numbers. Because our call & text plans do not require identity verification, delivery of verification messages cannot be guaranteed.