@lukasros Shutting down 2G in Australia, it accounts for barely 0.2% of traffic. The number two network, SingTel-owned Optus will keep theirs running until the end of April next year. Vodafone - Hutchison (trading as Vodafone) are the smallest network & have no plans on shutting 2G.
Where Mum lives in a biggish country town, the Optus & Vodafone networks don't work inside the house whereas Telstra has a new 4G tower installed to cover he side of the hill. Speeds of 65 Mbps down are possible from her driveway where the other two networks barely operate at all.