A carrier-locked phone cannot use Coral eSIM or any other carrier's SIM. Please check before purchase.
- iPhone: Settings → General → About → "Carrier Lock" should say "No SIM restrictions"
- Android: menus vary by model — contact your carrier or check your carrier account page to confirm and request unlocking
Phones bought unlocked or fully paid off are typically already unlocked. More details in our guide on unlocked phones.