Graphic showing 4 bars and the words Reliable Coverage.

We've got you covered!

With reliable 4G & 5G coverage across the UK.1

Check coverage in your area

Our network partner.

iD runs on the Three network. Enjoy 5G connectivity that's faster and more reliable.2

Great coverage.

Our 4G network covers 99% of the UK1, with 5G access in over 615 locations.2

Wi-Fi calling.

Make and receive calls using your Wi-Fi network.3

Check coverage & network status.

Underground coverage

Stay connected on the go.

Stay connected whilst traveling on the London Underground with reliable coverage across 131 areas, including 59 stations & 72 tunnels1 - with more to be added in 2026.

There's no setup required, meaning your phone will automatically connect and you'll be able to keep browsing, messaging and streaming.

Stations:

Bank, Charing Cross, Canary Wharf,
Green Park, Piccadilly Circus, Paddington

Tunnels:

Bank to Moorgate, Chancery Lane to Holborn,
Charing Cross to Piccadilly Circus

The Great British switch off.

Our 3G network is being switched off and will be phased out completely by the end of 2025.

Find out more

5G

unleashed

Stream, game,
and browse
faster and
more
reliably
with the
power of 5G.

Get ready for 5g

FAQs.

All iD Mobile services run on Three's network, and they're building the UK's fastest 5G network! To provide a true 5G network you need 100MHz of 5G ‘spectrum' (the bandwidth networks need to send and receive data). Three have 140MHz and are the only UK network to have that much. The next closest (Vodafone) has 50MHz with O2 and EE offering 40MHz.

With more than double the spectrum, Three's 5G network will be faster and able to handle more data - good news for iD Mobile customers!

A lot of things can affect the strength of your signal. Your distance from the nearest phone mast can make a huge difference. Large obstructions like trees and buildings (especially ones with lots of metal) can make your signal worse too.

If you're having signal problems here's a few tips to try and make it better:

  • First of all, go for the tried and trusted method of turning your phone off and on again. Yes, it's obvious - but sometimes it really does work.
  • If you're using your phone indoors, try going into different rooms to see if it makes any difference. Some rooms can get a stronger signal than others.
  • If you want to get a little more technical, put your SIM card into another phone and test your network coverage. This will help you to work out if there's a problem with your phone or the network.
  • Doing a factory reset can sometimes make a difference. Backup your phone's data first of all, then go into system settings and carry out a reset.

All iD Mobile services runs on Three's network, and they're building the UK's fastest 5G network!

To provide a true 5G network you need 100MHz of 5G ‘spectrum' (the bandwidth networks need to send and receive data). Three have 140MHz and are the only UK network to have that much. The next closest (Vodafone) has 50MHz with O2 and EE offering 40MHz.

With more than double the spectrum, Three's 5G network will be faster and able to handle more data – good news for iD Mobile customers!

Absolutely. 5G is available for free for all iD Mobile customers!

To enjoy lightning-quick 5G, you need a phone that can support it. Many big-name Android brands have already released 5G devices, including Samsung, Oppo, Huawei and LG.

The list above shows officially supported phones guaranteed to work on iD Mobile's 5G network. If your phone is not on the list, there's no need to worry. We're working to officially roll out 5G to as many phones as possible over the coming months.

As well as a 5G enabled device that is officially supported by iD Mobile (see above), you'll need to be in an area covered by our 5G network. You can check if your area has 5G by using our network coverage checker.

5G on iD is now available on the iPhone 12 range; this includes the iPhone 12, 12 Mini, 12 Pro and 12 Pro Max. If your phone does not connect to 5G when in an area covered by our 5G network, please check the following:

  1. Check that the device software is up to date by navigate to your phone settings.
  2. Check that 5G is enabled on your phone:
    Settings > Mobile > Mobile Data Options > Select 5G Auto

Once you've done the above, you might need to give your phone a quick restart by turning it off and on again.

The most significant difference you'll see when you switch from 4G to 5G is speed. You'll be able to do everything you do now, but much faster! Where 4G had a maximum download speed of 300Mbps, 5G can achieve an impressive 10Gbps! So, you can download a movie as you run for the train, enjoy perfect video calling when you're out and about and email large attachments while you work on the go.

However, 5G isn't a replacement for 4G. It's an extra layer on top that provides an even better network. So, where you can't get 5G, you'll still get a great 4G service to keep you connected.

5G doesn't use any more data than 4G. However, as it's so much faster, you may find yourself using your phone (and therefore data) more. A more generous data plan would allow you to take full advantage of what 5G has to offer.

Unfortunately, 5G requires a 5G enabled phone for you access it. But don't worry! We're working with our network provider to ensure our 4G service is providing the best coverage possible. And don't forget we already offer Wi-Fi Calling, letting you make calls from your phone over Wi-Fi if you don't have great reception indoors.

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SIM only plans.

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Terms and Conditions.

  1. Coverage subject to location. Check coverage in your area.
  2. iD 5G is available on selected 5G compatible phones only, as listed here. 4G vs 5G speeds based on fastest average median download speeds tested across 16 cities in RootMetrics UK 5G 2025 report.
  3. Wi-Fi calling is available on selected devices. Check your device here.