5G? It will come
> There will NEVER be a 5G network
It's a marketing term and as such will be rolled out whenever the marketing people think it will help them sell more phones.
Just as most O/S's today are, to all intents and purposes, virtually identical to the ones that preceded them ... and them ... and them - going back at least 10 years and a good case could be made for longer, too. So 5G will become the "thing" as soon as 4G sales start to stagnate. There might be some insignificant new feature, that all the journos who make their living from hyping up such insignificant features <ahem>! will hail as being the best thing since sliced bread.
However, these new, more expensive, 5G phones will still be used mainly to talk to people and send them text messages - just like mobiles were used for 20 years ago.