Find
Find
Map view
Level of coverage
This is predicted coverage and can't always be guaranteed.
Indoor & outdoor coverage
You can use your mobile to make calls, send texts and use the internet in most instances. When you’re indoors the signal strength may be better in different rooms.
Outdoor coverage
You can use your mobile to make calls, send texts and use the internet in most outdoor locations. If you’re inside you may struggle to get a signal.
Map view
Level of coverage
This is predicted coverage and can't always be guaranteed.
Indoor & outdoor coverage
You can use your dongle to connect to our Mobile Broadband network in most instances. When you’re indoors the signal strength may differ from room to room. See Tips on improving signal strength.
Outdoor coverage
You can use your dongle to connect to our Mobile Broadband network in most outdoor locations. If you’re inside you may struggle to get a signal. See Tips on improving signal strength.
Help
Help with this map

Loading coverage data

Although we try to make our maps as accurate as possible, the information is only a guide and doesn’t guarantee service availability in a particular location. If you’d like more accurate and up-to-date coverage information, please call us on 333 (free) from a 3 mobile, or 0843 373 3333 (national rate) from any other phone.
Although we try to make our maps as accurate as possible, the information is only a guide and doesn’t guarantee service availability in a particular location. If you’d like more accurate and up-to-date coverage information, please call us on 500 (free) from a 3 mobile, or 0843 373 0500 (national rate) from any other phone.
To start using the Coverage Checker enter a postcode, or a town or city in the location box, and click " Find".
You can look up coverage by entering a full postcode e.g. SL6 1EH, or just part of a postcode e.g. SL6 1, and clicking "Find".
You can hide the coloured coverage layers by clicking "Map only". This may help you see the map more clearly.
You can use the navigation arrows to pan north, south, east and west around the map.
You can use the + and - buttons to zoom in and out of the map. There are four possible layers of zoom, from UK outline down to major street level.

Coverage checker help

Our Coverage Checker is here to help you find out what level of service you can get on your mobile phone or USB Modem in the places where you live, work and play.