The biggest problem with 3G/4G was capacity, not speed. Yes 4G is fast enough for almost anything, but it gets overloaded in crowded areas pretty quickly. With the increasing amount of smart devices that try to use the mobile network, 4G just doesn’t cut it anymore, especially in cities. 5G has a lot higher overall capacity than 4G and thus really was a necessary step.
If it was really necessary to completely axe 3G is a different question, but keeping the network when it’s barely in use by a few old phones is also not to be expected. Especially since it can be really hard to get any replacement parts for older tech.
The biggest problem with 3G/4G was capacity, not speed. Yes 4G is fast enough for almost anything, but it gets overloaded in crowded areas pretty quickly. With the increasing amount of smart devices that try to use the mobile network, 4G just doesn’t cut it anymore, especially in cities. 5G has a lot higher overall capacity than 4G and thus really was a necessary step.
If it was really necessary to completely axe 3G is a different question, but keeping the network when it’s barely in use by a few old phones is also not to be expected. Especially since it can be really hard to get any replacement parts for older tech.