Internet Settings Setup

Learn how to configure internet settings on your device for optimal performance with Three mobile network.

10 min read
Easy difficulty
Updated: Jan 15, 2025

Introduction

Proper internet settings are crucial for getting the best performance from your Three mobile service. This guide will walk you through the process of configuring your device's APN (Access Point Name) settings to ensure a stable and fast internet connection.

Whether you've just got a new Three SIM or are experiencing connectivity issues, these steps will help you get online quickly and efficiently.

Important Note

MyThree Guide is an independent resource and not affiliated with Three UK. While we strive to provide accurate information, for official support always contact Three directly.

Three Mobile APN Settings

APN (Access Point Name) settings tell your phone how to connect to the mobile network. Here are the standard Three UK APN settings:

Setting Value Action
Name Three
APN three.co.uk
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC http://mms.um.three.co.uk:10021/mmsc
MMS Proxy mms.three.co.uk
MMS Port 8799
MCC 234
MNC 20
Authentication Type None
APN Type default,supl,mms
APN Protocol IPv4/IPv6

Device-Specific Instructions

While the APN settings are generally the same across devices, the way to access them varies. Select your device type below for specific instructions:

Android
iPhone
Other Devices
  1. Open the Settings app on your Android device
  2. Tap on Network & Internet or Connections
  3. Select Mobile network or Cellular networks
  4. Tap on Access Point Names or APN
  5. If there's an existing Three APN, tap on it. Otherwise, tap the + icon to create a new APN
  6. Enter the settings from the table above
  7. Tap the menu icon (three dots) and select Save
  8. Select the new APN to activate it
  9. Restart your device
  1. Open the Settings app on your iPhone
  2. Tap on Cellular or Mobile Data
  3. Select Cellular Data Network or Mobile Data Network
  4. Scroll down to the APN Settings section
  5. Enter the settings from the table above
  6. Go back to the previous screen to save automatically
  7. Toggle Airplane mode on and off to refresh the connection
  8. Restart your iPhone if the connection doesn't work immediately

For other devices such as tablets, mobile broadband dongles, or smartwatches:

  1. Check the device's network or connectivity settings
  2. Look for a section labeled APN, Access Points, or Mobile Networks
  3. Create a new profile or edit the existing one with the Three settings from the table above
  4. Save the settings and restart the device
  5. Consult your device's manual or support resources for specific guidance

Testing Your Connection

After applying the settings, it's important to test your internet connection:

  1. Disable Wi-Fi to ensure you're using mobile data
  2. Open a web browser and try loading a website
  3. Check if you can send and receive MMS messages (if applicable)
  4. Test the speed of your connection using a speed test app

Connection Successful

If websites load properly and you can send/receive data, your internet settings are correctly configured!

Troubleshooting Common Issues

My internet still doesn't work after applying these settings

Try these steps: 1) Restart your device, 2) Remove and reinsert your SIM card, 3) Check if you have mobile data enabled in your settings, 4) Ensure you have network coverage in your area, 5) Contact Three support to check if there are any account issues.

I can't find the APN settings on my device

Some devices or carriers may hide these settings. Try: 1) Searching for "APN" in your settings search bar, 2) Checking if your device has a separate "Network" or "Connections" app, 3) Contacting your device manufacturer for guidance, 4) Using the Three app which may automatically configure settings.

My MMS messages aren't working

Ensure you've entered the MMS-specific settings correctly: MMSC, MMS proxy, and MMS port. Also check that: 1) Mobile data is enabled, 2) You have a data allowance remaining, 3) Your device supports MMS messaging, 4) The recipient's number is correct.

My internet connection is slow

Slow speeds can be caused by: 1) Network congestion in your area, 2) Poor signal strength, 3) Background apps using data, 4) needing to update your device software. Try moving to a different location or testing at a different time of day.