New 4G masts have gone live in Sidmouth, which aim to give people faster access to the internet on smartphones and tablets. However, there is a small chance that some 4G mobile signals transmitted at 800 MHz will cause interference to Freeview, which is TV received via an aerial.

Households in Sidmouth have been warned new 4G phone masts could cause interference with their Freeview television – but support is available.

New fourth-generation mobile services, known as 4G, have been switched on in Sidmouth.

But viewers have now been told if they experience interference on Freeview it could be caused by the new services.

Problems can include loss of sound, pictures going blocky, freezing, the TV screen going blank or showing a ‘no signal’ message.

However, a company called at800 is offering free support to households that rely on Freeview for their television to resolve 4G-related interference problems.

It also offers extra support for the elderly and those receiving income support.

Cable and satellite TV, such as Sky or Virgin, will not be affected, but if viewers have cable and satellite TV and also watch Freeview, at800 can provide free filters.

People who are experiencing problems or would like more information can contact at800 on 0808 13 13 800