4G Coverage Checker.

Find out the signal strength in your area.

To check if you're covered by our network, enter your home postcode below and choose the 3G or 4G map.

You can also check other locations you visit regularly, such as your work address.

Important Information

This map is a computer-generated prediction, so please use it as a guide only. We try to make it as accurate as possible, but it's not a guarantee of actual signal coverage.

Please note: no mobile network can guarantee how strong your indoor signal will be, because the signal strength needed to pass through walls and other features varies from building to building.

4G Calling.

4G Calling gives you clearer calls in more places.

Improved coverage.

All our plans come with free Data Rollover, inclusive EU roaming and capping.

Superior call quality.

From pay monthly phones to SIM Only, we've got some of the UK's best deals.

Software update

Faster connectivity.

With an iD Mobile plan, you get speedy 4G mobile internet at no extra cost.

4G Calling is compatible with the following handsets:

Wi-Fi Calling.

Wi-Fi Calling is a new iD service that lets you make and take calls using a Wi-Fi network.

Improved coverage.

Wi-Fi Calling uses Wi-Fi to smash through indoor blackspots, so you'll be able to make phone calls in more places.

Wi-Fi Calling is compatible with the following handsets:

Got a question about coverage?

Check out our handy list of network coverage FAQs.

See more