Denis Naughten (Roscommon-Galway, Independent) | Oireachtas source

I will make a comment on Senator Wall's remarks. If someone can get coverage outside, it shows the problem is not the mobile phone coverage, but, as Dr. O'Connor said, one of insulation or the thickness of the house. Returning to Senator Garvey's comment on 5G, that is an even bigger problem inside because that frequency does not go through the insulation or thick walls so as the technology improves, it is travelling reduced distances. Repeaters will become required indoors in many cases. Approximately 80% of mobile phone usage is indoors.