> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.kurosim.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# What is an eSIM?

An **eSIM** (embedded SIM) is a small digital SIM chip built directly into compatible devices such as smartphones, tablets, and smartwatches.

Unlike a traditional physical SIM card, an eSIM doesn't need to be inserted or removed. Instead, it can be activated digitally, allowing you to switch mobile networks or data plans without changing a physical SIM card.

This is especially useful when traveling internationally, as you can quickly connect to a local network for better coverage and more affordable data—without the hassle of buying or swapping SIM cards.

| You can check whether your device supports eSIM [here](https://www.kurosim.com/id/check-device-availability).