This guide is based on Samsung devices. On other Android phones the menu names may differ slightly, but the meaning is the same.

> 📝 **Note:** Your eSIM will not be named "SimSIM" on your device — it appears under a local network's name at your destination, which is normal. The eSIM you just installed always appears at the bottom of the line list. [More details](/hc/help/articles/en-activating-your-esim).

## Step by step

**1. Open My eSIMs and tap install**

In the SimSIM app, go to **My eSIMs**, open the plan you purchased, and tap the install button. If you bought several plans, make sure you pick the one for your current destination.

**2. Approve adding the eSIM**

Approve the request and tap **Continue** if prompted. Installation takes a few minutes and your device will show progress as a percentage. Don't close the screen partway through.

**3. Turn on data roaming**

In your device settings tap **Connections**, then **Mobile networks**. On the page that opens, turn on **Data roaming**. This is the critical step — without it the eSIM is installed but won't connect to the network at your destination.

> 💡 **Tip:** The eSIM you just installed always appears at the bottom of the line list.

**4. After you land — open the SIM manager**

Once you arrive, in device settings tap **Connections** and then **SIM manager**. This is where all the lines on your device are managed, including the eSIM you installed.

**5. Choose your data line**

Tap **Mobile data** and select the eSIM you set up. From this point your browsing runs through the plan you purchased, while calls and messages continue through your primary line.

> 📝 **Note:** Android menu names vary between manufacturers. The path shown here is Samsung's. On other devices look for **Network & internet**, **SIM cards**, or **Connections** — the meaning is the same.

## If something isn't working

The most common problem by far is **data roaming** being switched off on the new line. If you have no internet at your destination, check that first.

For more checks see [Troubleshooting](/hc/help/articles/en-troubleshooting), confirm your model is on the [compatible device list](https://simsimglobal.com/esim-compatible-devices), or see [installing on iPhone](/hc/help/articles/en-install-esim-iphone) if you're setting up a different device.