Most eSims are delivered within minutes to your inbox after purchase, but some give you immediate install instructions after purchasing.
Make sure you install your eSim before heading to your travel destination, as you might not be able to activate it without internet, which you don’t have when you arrive!
Normally, a simple scan of a QR code followed by an eSim confirmation completes the installation process!
Here’s an example of how easy installation is on Holafly:
