How does an eSIM work on Android?

Switching mobile networks used to mean swapping tiny SIM cards or dealing with expensive roaming abroad. If you’ve recently heard about eSIMs, you might be wondering how they work on Android. Many users assume the setup is overly technical or aren’t sure if their device is even compatible.

An eSIM is a digital SIM built into your phone. Instead of inserting a physical card, you download a profile that securely connects your device to a mobile network. While carrier eSIMs replace your mobile provider’s SIM card, travel eSIMs like holiday.com offer a temporary data plan to stay connected abroad without cutting off access to your primary number.

We’ll explain how eSIMs work on Android and the quickest way to verify if your phone supports this. Whether you’re setting up a carrier line or a travel plan for your next trip, we’ll also show you how dual SIM works and why you should use it.

How do digital SIMs actually work?

Because an eSIM is embedded directly into your phone’s hardware, the entire setup process is digital. You can skip the carrier store and stop fumbling with tiny plastic cards when adding a second work line or an international travel plan. Here’s a breakdown of how this technology connects your Android to a mobile network.

Is your Android eSIM-compatible?

Not all Android phones support eSIMs, and some newer models may only support eSIM. You can review our list of compatible Android devices to see if your model’s on the list. Your phone must also be carrier-unlocked to use travel eSIMs like holiday.com. Because carrier restrictions vary, the fastest way to confirm compatibility is to check yourself.

If the dial code doesn’t work, you can always manually check your device’s settings.

On Samsung

1. Go to Settings > Connections.
2. Tap SIM manager.
3. If you see the option to Add eSIM, your phone is compatible.

On Google Pixel

1. Go to Settings > Network & internet.
2. Tap SIMs.
3. If you see the option to Add eSIM or Download a SIM, your phone supports eSIM.

On Xiaomi

1. Go to Settings > SIM cards & mobile networks.
2. Scroll down to check for your eSIM options.
3. If you see Add eSIM or Manage eSIM, your device is compatible.

How do you install and activate eSIM on Android?

While setup steps vary by provider, most carriers offer a dedicated app or a QR code for quick installation. Manual entry is also an option if you don’t have a second screen available to scan a code.

1. Install the eSIM profile. Follow your provider's instructions to download the digital profile. We highly recommend using an official app, as it’s the fastest method. Since you need a stable Wi-Fi connection, it's best to install your travel eSIM before leaving for the airport.
2. Activate your eSIM. Once installed, switch your data line to the new eSIM and enable cellular roaming. If you’re using a travel eSIM like holiday.com, wait until you arrive at your destination to activate it. Connecting beforehand can leave your device stuck on “Activating...” or showing “No Service” until it finds a supported local network.

It might take a few minutes for the activation process to complete. Turning airplane mode on and off or restarting your device can also speed up the process.

How does dual SIM work on Android?

If your Android phone supports dual SIM, you can run two mobile lines on a single device. This is ideal for keeping work and personal numbers separate, or for using a travel plan like holiday.com for mobile data abroad while keeping your primary number active.

On Samsung

Here’s how to turn on your eSIM and set it as your primary data line.

On Google Pixel

1. Go to Settings > Network & internet > SIMs.
2. Select your downloaded eSIM profile and toggle on Use SIM.
3. Scroll down to “SIM preferences” and assign your preferred line for Mobile data, Calls preference, and SMS preference.

On Xiaomi

1. Go to Settings > SIM cards & mobile networks.
2. Tap your new eSIM profile and toggle it to turn it on.
3. Return to the previous menu to assign your preferred line under Data SIM and Default for calls.

Android layouts vary slightly by model. If yours looks different, type “SIM” in the search bar from the main Settings screen to find this setting.

Using eSIM on Android is simple and convenient

An eSIM allows you to switch carriers more easily, add a second line, or use an international data plan without the hassle of swapping tiny plastic cards or tracking down a local carrier store. The setup is entirely digital and beginner-friendly, particularly when your provider offers app-based activation.

If you travel often and need reliable mobile data abroad, you can download the holiday.com eSIM app from the Play Store. You only need to install the eSIM once. It’s a convenient way to connect to local data networks while abroad and you can still keep your home line active if needed.