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How to Set Up eSIM

How to Set Up eSIM

eSIM Setup Guide

Set up your ByteSIM eSIM

Install your eSIM before you travel, then connect on arrival. Follow the steps for your device below. Activation timing depends on your plan, so check your order details.

Start setup
iPhone & Android QR, manual or app setup 24/7 support

This guide covers installing on iPhone and Android, when your plan starts, and how to fix common connection issues.

Setup Overview

Install and connect in three steps

Use this page for the general setup flow. Check your order details for plan-specific activation timing.

01

Check your phone

Make sure your phone supports eSIM, is unlocked and is on stable Wi-Fi.

02

Install your eSIM

Tap to install in one step, scan the QR code, or install via the ByteSIM App.

03

Connect on arrival

Set your ByteSIM line for data and switch on roaming (no extra charge from us).

No signal or data? Check that roaming is on and your ByteSIM line is selected for data, or contact ByteSIM 24/7 support.

eSIM Installation Guide

Choose your device

Select iPhone or Android, then follow the installation method that matches your ByteSIM setup.

Before you start: your phone should support eSIM, be carrier-unlocked and connected to stable Wi-Fi. Check compatible devices
iPhone setup For iPhone users. Auto-install available on iOS 17.4+. Automatic QR Code Manual Android setup For Samsung, Pixel and other Android phones. Auto-install on Android 10+. Automatic QR Code Manual

iPhone eSIM Setup

Automatic

Install automatically on iPhone

Open the install page in your ByteSIM App, confirm the prompt, then complete the iPhone setup.

Your iPhone may show extra setup prompts, such as line label, default line or mobile data. Follow the on-screen instructions. You can change these settings later.
QR Code

Install with your ByteSIM QR code

Open Mobile Service or Cellular settings, add a new eSIM, then scan the QR code shown in your ByteSIM App.

Your iPhone may show extra setup prompts after scanning. Follow the on-screen instructions. You can change these settings later.
Manual

Install with manual details

If QR scanning is unavailable, you can enter the installation details manually from your ByteSIM App.

1 Open manual setupGo to Settings > Cellular or Mobile Service, then tap Add eSIM.
2 Copy the details from ByteSIMChoose Enter Details Manually, then copy the SM-DP+ Address and Activation Code from your ByteSIM App.
3 Finish the iPhone setupFollow the on-screen prompts to complete installation. You can adjust line settings later.
Manual setup is only needed if Automatic installation or QR code scanning is not available. Copy the details exactly as shown.

Android eSIM Setup

Automatic

Install automatically on Android

Tap Install eSIM in your ByteSIM App. Android may show setup prompts before installing your eSIM.

Android setup screens may vary by brand, model and system version. Follow the on-screen instructions if the wording looks different.

When does my ByteSIM eSIM start?

Most plans start only after your eSIM connects at your destination.

Activation start

Install before you travel. Start when you arrive.

For most ByteSIM plans, installing the eSIM does not start your plan. Your plan starts when the eSIM first connects to a supported network in the covered destination.

Install Arrive Connect Plan starts
Install anytime You can install your eSIM before departure while connected to stable Wi-Fi.
Starts on arrival Most plans start when your eSIM first connects to a local network in the covered area.
Check plan details Some plans start on a selected date or require activation in the ByteSIM App. Follow the activation note on your order.
Tip: Keep your ByteSIM eSIM turned off until you arrive if you do not want it to connect early.
After installation

Connect when you arrive

Turn on your eSIM

When you arrive, turn on your ByteSIM eSIM, enable data roaming and set it as your mobile data line.

Data roaming on Mobile data line

Check basic settings

If data does not work, restart your phone, check the product APN settings and make sure your phone is connected to a supported network.

APN settings Supported networks Restart phone

Still not connected?

Contact 24/7 support with your order number, current location, device model and screenshots of your network settings.

24/7 support Order number Screenshots
24/7 support

Need help with setup?

For faster support, include your order number, current location, device model and screenshots of your network settings.

WhatsApp Support Email Support

WhatsApp: +852 9290 0577 | Email: service@bytesim.com