TELEVISION signals may be affected by new mobile services.

4G masts have gone live in Brighton, which may cause interference to households that receive Freeview.

Loss of sound, the picture freezing or the TV screen going blank or showing a 'no signal' message are signs of interference.

Cable and satellite TV like Sky or Virgin will not be affected.

Free support is available from at800, a company who can send filters that will fix the signal problems.

CEO of at800 Ben Roome said: “We want to ensure that people know it’s our role to fix Freeview interference caused by 4G at 800 MHz, and that there’s no charge for our service.

“If you rely on Freeview for TV, we can send you a filter to fit yourself, free of charge, which fits into the aerial lead connecting to TVs and set-top boxes to block mobile signals.

"Full instructions are included, and we can provide further advice online and by phone if needed.

“In most instances, fitting the filter will resolve any interference from 4G at 800 MHz, but if this isn’t the case, we may also be able to arrange a follow-up visit from an at800 engineer at no cost, depending on eligibility.”

The company also offers extra support for people who are 75 or older, are registered blind or partially sighted or receive benefits including personal independence payments (PIPs), attendance allowance, constant attendance allowance or War Pensioner’s Mobility Support.

To contact at800, call 0808 13 13 800, and for more information visit their website at