What is an eSIM?

Learn about eSIM technology and how it replaces traditional SIM cards.

What is an eSIM?

An eSIM (embedded SIM) is a digital SIM built directly into your device. Instead of inserting a plastic card, you download a mobile plan over the internet and it is stored on a tiny chip already inside your phone.

How does it work?

When you purchase a Simsima eSIM, you receive installation instructions — either a Smart Link (one-tap install), a QR code, or manual activation codes. Once downloaded, the eSIM profile sits alongside your regular SIM, so you can keep your home number active while using Simsima for data abroad.

Key benefits

Instant setup — Purchase and install in under 2 minutes, no waiting for delivery

No physical card — Nothing to lose, break, or swap out

Multiple profiles — Store up to 8-10 eSIM plans on a single device

Keep your number — Your primary SIM stays active for calls and texts

Eco-friendly — No plastic waste from packaging or cards

When should I use an eSIM?

eSIM is ideal for:

International travel — Avoid roaming charges by using a local data plan

Multi-country trips — Use regional plans covering several countries at once

Business travel — Stay connected without dealing with local SIM vendors

Short trips — Even for a weekend, an eSIM is worth it — plans start at just a few dollars

Is my phone compatible?

Most smartphones released since 2018 support eSIM. This includes iPhone XS/XR and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer, and many others. Check our eSIM Compatible Devices page for a full device list.

What is an eSIM?

Learn about eSIM technology and how it replaces traditional SIM cards.