🔔 This guide is for Smart SIMs only

Before you begin 📍

Your Smart SIM lets you stay connected when you're in the UK or abroad. You'll need:

The Smart SIM email with your QR code
The Honest app installed on your phone
A few minutes to complete the setup

Installing your Smart SIM 📲

This adds your Honest Smart SIM to your phone so you can start using it.

Open the Smart SIM email you received
Find the QR code and scan it with your phone's camera
Tap Add Mobile Plan when prompted
Follow the setup assistant to complete installation
Unable to scan the QR code? Try this guide to add it manually →

Enabling data roaming

This makes sure your Smart SIM works properly and is connected when you're in the UK or abroad.

Open Settings
Tap Cellular or Mobile Data
Select your Smart SIM
Turn on Data Roaming

Updating the APN

This makes sure your Smart SIM connects to use data services.

Open Settings
Tap Cellular or Mobile Data
Select your Smart SIM
Tap Mobile Data Network
Replace the top APN with data00.telnyx
Tap back.

Configuring data switching

This makes sure your main SIM handles mobile data, and your Smart SIM can step in when needed.

Open Settings
Tap Cellular or Mobile Data
Tap Cellular Data
Select your main SIM (not the Smart SIM)
Turn on Allow Cellular Data Switching

Making sure VPNs are off

VPNs will block your Smart SIM connection, so it's best to turn them off.

Open Settings
Tap General
Tap VPN & Device Management
Turn off any active VPN connections

What's supported 🛟

Apps

We support apps that use low data to help keep costs down for everyone.

View the full list of supported apps →

Countries

We've partnered with networks around the world so your Smart SIM works wherever you go.

Check the full list of supported countries →

Testing your Smart SIM ✅

You can use this URL https://smartsim.honestmobile.com to test things - once connected to Smart SIM. If you get a green tick you are connected to Smart SIM, if you get a red X you are using another data source (for example WiFi):
If the page doesn't connect, the best option is to test using a supported app on Smart SIM. For example, WhatsApp.

Changing networks

Smart SIM will connect to the network with the best coverage. If you want to select one manually.

Open Settings.
Tap Mobile Data,
Select your Smart SIM and then select Network Selection.
Turn off Automatic Selection.
Allow a few minutes for the list of available networks to populate.
Tap on your desired network to connect.

This can be handy for testing another local network in your area or if your usual connection isn’t working well.The UK supports connections on EE, O2, Three and Vodafone.

Supported International networks are available by viewing our list of supported countries: https://help.honestmobile.com/en/articles/9706266-which-countries-does-smart-sim-cover