Our 3G network has now been switched off.

The majority of our 3G network was switched off in September 2024, and the remaining areas were switched off in November 2025.

With a compatible device, you can enjoy our network in 4G and 5G areas.

You can check which coverage is available in your area by clicking here.

In December 2021, the UK government announced that 2G and 3G will be phased out by 2033.

Aside from the government guidance to sunset 2G and 3G spectrum by 2033, 4G and 5G are newer, faster, and more efficient technologies, so switching off 3G allows us to focus our investments and spectrum resources which will benefit our customers.

If 4G and/or 5G coverage is not available in your area or you don't have a compatible device, you won't be able to use our network.

Our engineers are working hard to provide 4G and 5G coverage in more areas across the UK.

If your area has 4G/5G coverage available (check here), you will just need a compatible device to get connected.

If we thought you didn’t have a compatible device or might be impacted by the switch-off, we would have contacted you in advance to give you time to find a replacement and provide you with options.

Let's break it down 👇

Vo = Voice

LTE = Technical term for 4G

Put together they form VoLTE which means voice calls over 4G. If a device isn't VoLTE compatible, it'll drop to 3G to carry the call.

VoLTE provides a better quality of voice call.

You’ll need a VoLTE device which is compatible with the SMARTY network (check here) to enable you to make calls, texts and use data over the 4G network.

Some devices are 4G, but do not have VoLTE capability, or are VoLTE but not compatible with the SMARTY network – if you have one of these non-compatible devices (check here). You must upgrade to a compatible device to stay connected in 4G/5G areas.

This sounds very techy! So in short, if your device is not compatible (again, you can check here), it will no longer connect to the network, and you'll need a compatible 4G VoLTE device to make calls, send texts and use data over the 4G 5G network.

If your current device is listed here and/or not 4G VoLTE-compatible, you’ll need to upgrade to one that is compatible with our network if you are in a 4G/5G area.

If we thought you didn’t have a compatible device, we would have contacted you in advance before the 3G switch-off happened in your area to give you plenty of time to find a replacement.

We understand that purchasing a new device isn't always an option.

If you received communication that your area would be impacted and chose not to upgrade, you'll no longer be able to use 3G services.

If you need to upgrade, there are many ways to do this more affordably. For example, SMARTY is partnered with Reboxed®, where you can benefit from exclusive SMARTY customer discounts on a refurbished phone.

Our friends at Three also offer device and airtime bundles and are giving SMARTY customers up to 20% off selected 24-month Airtime plans when you sign up to pay for your new phone with Three over 12, 24 or 36 months at 0% APR. Shop here.

You can also buy low-cost, SIM-free compatible devices at most online and high-street tech retailers, just remember, it needs to be unlocked, a minimum of 4G-VoLTE compatible and not listed here.

You won't be able to get fully connected to the SMARTY network.

On 8 December 2021, the Government announced that all public 2G and 3G networks will be switched off by 2033 at the latest. However, it encouraged operators to switch off their networks, particularly 3G networks, earlier than this date.

We understand how important your device is for your needs. If your current device isn’t compatible, we’ll be happy to discuss devices that could suit your needs.

Our dedicated Accessibility Team are on hand to help with any specific queries you might have.

Our SIMs are sent as a trio, so you can pop out the size you need. Most new devices take Nano SIMs. See here for more info on SIM sizing.

If you have a 3G data-only Mobile Broadband device, it will no longer be supported.