Before you buy: three quick checks

Taking two minutes before checkout avoids almost every installation problem.

1. Your phone supports eSIM. Dial *#06#. If an EID appears, your phone has eSIM hardware. You can also search your model in the compatibility checker.
2. Your phone is carrier-unlocked. A phone locked to one carrier can't use another network's eSIM. On iPhone, go to Settings → General → About and look for Carrier Lock: No SIM restrictions. On Android, ask your carrier or try a different SIM.
3. The plan covers every country you'll visit. Country plans work in one country. For multi-country trips, choose a regional or global plan and check the coverage list on the plan page.