There are a number of cellular networks in Ireland covering the whole country with mobile signal. Each network is managed by a different provider. The most common are Vodafone, O2, Three, Meteor, eMobile, Tesco Mobile.
However, they cannot assure 100% effective coverage in every corner of Ireland. In some regions you can find it impossible to make any calls, never mind get online. The key factors that affect the quality of mobile network coverage include
In recent weeks I purchased two units from myamplifiers.com - in hindsight I did not need to do this since one unit would have sufficed but that was a mistake on my part. One unit was to boost my Mobile Phone signal. I have lived in my present home since 2009 and have not been able to use my mobile phone indoors. This, as you can imagine, has been very frustrating.