eSIM FAQs: Your Most Common Questions Answered
eSIM technology is becoming increasingly mainstream, yet many people still have questions about how it works. Below, we've compiled answers to the most frequently asked questions about eSIMs to help you get started with confidence.
What Is an eSIM?
An eSIM is a digital SIM card embedded directly into your device. Unlike traditional SIM cards — which are small removable chips — an eSIM is soldered into your phone's motherboard and programmed digitally. It performs the same function as a physical SIM: it identifies your device on a mobile network and enables you to make calls, send texts, and use mobile data.
What Is the Difference Between an eSIM and a Physical SIM?
Both types of SIM cards authenticate your device on a mobile network, but they differ in several important ways:
- A physical SIM is removable; an eSIM is permanently embedded.
- A physical SIM is locked to a single carrier profile; an eSIM can store multiple profiles.
- Switching carriers with a physical SIM means getting a new card; switching with an eSIM is done digitally in settings.
- An eSIM cannot be lost or physically damaged the way a plastic SIM card can.
Which Devices Support eSIM?
eSIM support varies by device and region, but it's available on a wide range of modern smartphones, tablets, and smartwatches, including:
- iPhone XS / XR and all newer iPhone models
- Samsung Galaxy S20, Z Fold, Z Flip, and later series (in most regions)
- Google Pixel 3 and later
- iPad (6th generation and later)
- Apple Watch Series 3+
- Various other Android devices from Motorola, Huawei, and others
Always check your specific device model's official specs, as eSIM availability can depend on the variant and country of sale.
How Do I Install an eSIM?
The most common method is via QR code:
- Purchase an eSIM plan from your chosen provider.
- Receive a QR code (via email or app).
- On your device, go to Settings → Cellular / Mobile Data → Add Plan.
- Scan the QR code to download the eSIM profile.
- Follow the on-screen prompts to activate.
Some providers also offer direct app-based installation, making the process even simpler.
Can I Use a SIM and eSIM at the Same Time?
Yes! Most modern smartphones with eSIM capability also support Dual SIM functionality. This means you can use a physical SIM for one line (e.g., your home carrier) while using an eSIM for another (e.g., a travel data plan) simultaneously. Both lines remain active, allowing you to receive calls and use data on either plan.
Can I Install Multiple eSIMs on One Device?
Yes. Most eSIM-compatible devices can store multiple eSIM profiles in memory. However, typically only one eSIM profile can be active at a time (though you can switch between them easily). The exact number of stored profiles varies by device — iPhones, for example, can store up to 8 or more eSIM profiles depending on the model.
Can I Make Phone Calls With an eSIM?
It depends on the plan. Many travel eSIM data plans are data-only, meaning they don't include a phone number for traditional calls or texts. However, you can still make calls via internet-based apps (like WhatsApp, FaceTime, Skype, or Zoom) using your data connection.
Some eSIM plans do include a local phone number, enabling traditional calling and SMS. If that's important to you, look specifically for plans that advertise voice and SMS support.
When Does an eSIM Activate?
Activation timing depends on the provider and plan type. Many eSIM plans activate immediately upon installation. Others — particularly travel eSIMs — activate the first time your device connects to a supported network in the destination country. Always check your plan's terms before traveling.
What Happens When I Run Out of eSIM Data?
When your data allowance is exhausted, your data connection will stop working (or may slow to minimal speeds, depending on the plan). Options include:
- Purchasing a top-up from your provider
- Buying a new eSIM plan
- Switching to a different active eSIM profile
Can I Use the Same eSIM in Multiple Countries?
Some eSIM plans are regional or global, covering multiple countries under a single plan. Others are country-specific. If you're traveling through several countries, look for a regional or multi-country eSIM plan to avoid managing multiple separate plans.
Can I Set Up a Hotspot With an eSIM?
Yes, in most cases. As long as your device supports hotspot/tethering functionality and your eSIM plan permits it (some plans restrict hotspot use), you can share your eSIM data connection with other devices via Wi-Fi hotspot.
Can I Turn Off an eSIM?
Absolutely. You can disable an eSIM profile at any time through your device's settings. Disabling it prevents the profile from connecting to the network without deleting it, so you can re-enable it whenever needed.
Is My eSIM Secure?
eSIMs use industry-standard encryption and are protected by a secure element chip. They are generally considered more secure than physical SIM cards, as they can't be physically stolen or cloned the way a traditional SIM can be.