An eSIM is a digital SIM — there is no plastic card to wait for. You buy online, a QR code appears straight away, you scan it, and your number is live in minutes.
Pick your home country and a plan, and pay by card, Apple Pay or Google Pay.
Your QR code appears instantly and is saved to your account. On the phone the eSIM is for, open Settings, then Mobile or Cellular, then Add eSIM, and scan the code.
Settings > Mobile Service (or Cellular) > Add eSIM > Use QR Code. If you are buying on the same iPhone, tap Enter Details Manually and paste the activation code shown under your QR.
Settings > Connections or Network > SIM manager > Add eSIM > Scan QR code. Wording varies slightly by brand.
Your home-country minutes are already in your plan. When they run out, calls simply pause — your balance can never go negative.