Network and service

Network upgrades, WiFi calling, and troubleshooting network related issues.

 

Network coverage	Discover why the SMARTY network is so powerful.
Mobile and Broadband Estimated Maximum Speeds	The estimated maximum speed that the SMARTY Network (powered by Three) will support.
Free Wi-Fi on London Underground	Stay connected underground at over 250 stations.
What bandwidth and spectrum is available on SMARTY?	Learn about the difference between 3G, 4G, 4G+, VoLTE, and L-Band.
Switching off 3G	Learn how saying goodbye to 3G affects you.
Am I 5G ready?	Here’s how you can access our 5G network.
Which devices are compatible with 5G?	To use our 5G network, you will need a compatible device.
What is WiFi Calling?	Here’s the lowdown on what WiFi Calling is and why it’s great for keeping you connected.
How do I use WiFi Calling?	Everything you need to know about setting up and using WiFi Calling.
Which devices are compatible with WiFi Calling?	To use WiFi Calling, first, you'll need a compatible mobile device.
Tips for using WiFi Calling	Info on using WiFi Calling while abroad or in public hotspots, and WiFi requirements for getting the best call quality.
My WiFi Calling is not working	Steps to help you troubleshoot WiFi Calling
Planned works	Planned works.
Signal issues and dropped calls	Find out how to resolve problems with your service.
SMARTY and eSIM	SMARTY and eSIM.