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What is 4G? Why is it being introduced?

Fourth generation mobile services, known as 4G, are launching across the UK. 4G gives people faster access to the internet on smartphones and tablets. However, there is a small chance some 4G mobile signals may cause interference to TV received via an aerial, known as Freeview. This is because 4G mobile signals sit next to the frequencies used by Freeview. TVs and set-top boxes that receive Freeview can fail to block the 4G mobile signal, causing TVs to lose sound, channels and pictures to go blocky, freeze or say No Signal.

The first 4G at 800 MHz services launched on 29 August 2013. For more information on when they will be available where you are, visit coverage checkers on the operators’ websites.

Our video explains what’s happening.

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Our online diagnostic tool will help you identify what might be causing disruption to your Freeview service.