Your eSIM will not be named “SimSIM” on your device — it appears under a local network’s name at your destination, which is normal. More details.
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.
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.
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.