Not everyone uses a smartphone with the constant consumer churn. I've had a good quality Nokia "dumb" phone for 10 years and have no reason to buy a new one, I need a new £10 battery soon and then it will keep going for another ten years in this country.
"Assembly Research founder Matthew Howett told BBC News the change would probably come sooner than the government's 2033 deadline."
"BT revealed plans to phase out 3G by 2023, and 2G later in the decade."Also a strange quote from BT since they don't actually have a mobile network.