SMARTY is powered by Three, who have announced they’re switching off 3G by the end of 2024. This means, better quality 4G and 5G service for all, at no extra cost.

The good news is you won’t experience any immediate changes to your service, but if you have a 3G only device, it’s a good time to start thinking about upgrading to a 4G enabled device.

We’ve listed some FAQs you may find handy, see below for more info:


When is 3G being switched off?

We expect the switch off of our 3G technology by the end of 2024.

Why are Three switching off their 3G network?

In December 2021, the UK government announced that 2G and 3G will be phased out by 2033. Since then, some of our competitors have already announced plans to switch off 3G networks.

Aside from the government guidance to sunset 2G & 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.

How do I know if my device is 4G compatible?

Follow these steps to find out:

  • Dial *#06# on your phone to display your IMEI number.

  • Go to, enter your IMEI number and select Check.

  • You’ll see a report. Look at the LTE section – it will display all the frequencies that your phone is capable of using.

    Our 4G service runs on the 1800MHz frequency, so if you see 1800 in that column, your phone is 4G compatible. We also support Supervoice (VoLTE @ 800 MHz) and WiFi calling.

I don’t have a 4G enabled device, what do I need to do?

If you are using a 3G only device, you’ll need to upgrade to a 4G compatible device by the end of 2024 to continue using our network.

You don’t sell devices, so how can I still use SMARTY without changing my device to a 4G one?

To use SMARTY from 2024 and beyond, you’ll need a 4G compatible device.

If you need to purchase a new device due to your current device being 3G only, you just need to ensure it’s 4G compatible and unlocked to all networks.

I only get 3G most of the time, can you guarantee I will continue to get service?

By the time 3G switch off happens, we will upgrade all our sites to 4G, so all customers will be in a 4G area. In places where you currently get 3G, this will move over to 4G so you’ll receive a better quality connection.

More questions? We're here to help. Our web-chat team are available from 8am-8pm 7 days a week.

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