During 2013, mobile phone operators are launching fourth-generation (4G) networks to provide customers with high speed wireless broadband. Where these services are broadcast on certain airwaves (the 800MHz band), they may interfere with Freeview reception.* A new company, at800 , has been set up by the mobile operators to provide filters and other assistance to households where TV reception is affected. From March 2013, at800 will be testing the impact of 4G signals in certain areas prior to launch of these networks. For further details visit at800.tv or call them on 0333 31 31 800. *Existing 4G services from EE do not affect Freeview services as these operate in a different band.