A travel eSIM is one of the easiest ways to get mobile data abroad – no physical SIM cards, no hunting for a kiosk, and no surprise roaming charges. But many travelers still ask the same question: when should I buy a travel eSIM before my trip? The good news is you can usually purchase […]
Does eSIM require special apps to install?
As eSIM technology becomes the new standard for international travel, many users wonder: “Does eSIM Require Special Apps to Install?”. If you are planning a trip and considering a travel eSIM, the technical side might seem a bit mysterious. This guide will clarify whether you truly need extra software just to stay connected with an eSIM and how to get your eSIM up and running in minutes.

In this article
I. Does eSIM Require Special Apps to Install?
No. You do not need to download a special app to install or activate an eSIM.
eSIM technology is built directly into your smartphone’s hardware (motherboard). Because it is a native feature, your phone’s operating system (iOS or Android) already has all the tools necessary to handle the installation.
While many providers (including Gigago) may offer an app for managing your data usage or purchasing top-ups, the actual “installation” is handled by your phone’s settings, not a third-party application.
II. How eSIM installation works – Explained quickly for beginners
eSIM is a digital version of the plastic SIM card you are used to. Instead of physically sliding a chip into a slot, you are simply downloading a “profile” onto your phone. Your phone downloads the eSIM profile and adds it as a new cellular line. This profile can be installed through:
- Scanning a QR code, or
- Entering activation details manually (provided by your eSIM seller)
An app is optional and only used by some providers for convenience (tracking data, topping up, or managing plans).
III. How to install an eSIM without an app
What you actually need (instead of an app):
- An eSIM-compatible phone
- An unlocked phone (not restricted to one carrier)
- A stable internet connection during installation (Wi‑Fi is easiest)
Steps to install:
On iPhone (no app needed)
- Go to Settings → Cellular (or Mobile Data) → Add eSIM
- Choose Use QR Code and scan the QR code you received (or choose Enter Details Manually if provided)
- Label the line (e.g., “Gigago Travel”)
- Set Cellular Data to the eSIM when you’re ready to use it
- Turn on Data Roaming for the eSIM if your plan requires it
On Android (steps vary by brand, still no app needed)
- Go to Settings → Network & Internet → SIMs (or Mobile Network) → Add eSIM
- Select Scan QR code (or Enter activation code)
- Choose the eSIM for Mobile Data when ready
- Enable Data Roaming if required
Tip: Many travelers install the eSIM before departure on home Wi‑Fi, then switch data to the eSIM after landing.
IV. When you might need an app
While an app isn’t required for installation, it can be very helpful for management. You might choose to download a provider’s app for the following reasons:
- Tracking Data Balance: Easily see how many GBs you have left.
- Purchasing Top-ups: If you run out of data mid-trip, an app often allows for a “one-click” purchase to extend your plan.
- Customer Support: Quick access to live chat if you have connectivity issues.
- Compatibility Check: Some apps can automatically detect if your phone is carrier-unlocked and eSIM-compatible.
V. Do I Need Wi‑Fi to Install an eSIM?
Yes, you typically need the internet to install an eSIM, because your phone must download the eSIM profile.
The best options are:
- Wi‑Fi (recommended): stable and easy before you travel
- Another data connection: e.g., your current SIM’s data or hotspot from a friend (works, but less reliable than Wi‑Fi)
Good to know:
- You may need the internet only during installation. After it’s installed, it can work normally once you arrive (depending on when the plan activates).
- To avoid last-minute issues, we highly recommend installing your eSIM the day before you fly or while you are still at the airport with reliable Wi-Fi. You can install it ahead of time; the data plan usually won’t start counting down until you land and connect to the local network in your destination country.
If you are looking to buy an eSIM plan for your next trip, visit Gigago store. We have esIM plans for more than 200 countries and territories in the world (over 300+ eSIM ranges)