Understanding How It Works

How Simify eSIMs work, activation timing, and what to expect.

eSIM Compatibility & Network Unlock Guide

Before purchasing a travel eSIM, it’s important to confirm two things: your phone supports eSIM and it’s unlocked. Here’s how to quickly check both.

Supported Devices for Simify eSIM

Wondering if your device works with a Simify eSIM? Here’s a list of supported smartphones, tablets, and smartwatches that are compatible with eSIM.

How Do I Make Calls and Texts Without Roaming Fees?

Simify eSIMs are data-only, but you can still call and message while traveling. Here’s how to stay connected without paying roaming fees.

What’s an eSIM

An eSIM is a digital SIM built into your device that lets you download a mobile plan without inserting a physical card. Here’s how it works.

What Is an In-Built VPN and How Does It Work

Some Simify eSIM plans include an in-built VPN that runs automatically in the background. Here’s how it works and when it’s available.

How Much Data Do I Need

Not sure how much data you need for your trip? Use this simple guide to estimate the right eSIM plan based on how you use your phone while traveling.

When Should I Buy My eSIM

You don’t need to wait until the last minute to buy your eSIM. Learn how the 180-day activation window works and when most travelers choose to purchase.

Saving Your Data

Apps can use data in the background even when you’re not using them. Learn how to disable background activity on iPhone, Android, and Pixel to save your travel eSIM data.

How Do I Get a First-Time Customer Discount

New to Simify? Learn how first-time customer discounts work and how to apply a promo code at checkout.

Discount Rules

Having trouble with a discount code? This guide explains how Simify promotions work and why discounts can’t be stacked.