Don't think there is any sense in buying at all when 5G is the norm soon.
The idea of 5G is to connect anything with voice data and video, which makes 2g 3g 4g redundant.
Nowadays u need 2g for voice, 3g for data and 4g for video.
5G will do it all and connect everything.
Telephone companies will turn off 2g 3g 4g after a certain time. Then NWD has to run over the 5G.
May as well just use 5G. But hey -only gustimating on the threats-that seem real to the existence of MRY.
"What will the 5G network, which is expected to be standardized around 2020, look like? It is now too early to define this with any certainty. However, it is widely agreed thatcompared to the 4G network, the 5G network should achieve 1000 times the system capacity, 10 times the spectral efficiency, energy efficiency and data rate (i.e., peak data rate of 10 Gb/s for low mobility and peak data rate of 1 Gb/s for high mobility), and 25 times the average cell throughput. The aim is to connect the entire world, and achieve seamless and ubiquitous communications between anybody (people to people), anything (people to machine, machine to machine), wherever they are (anywhere), whenever they need (anytime), by whatever electronic devices/services/networks they wish (anyhow). This means that 5G networks should be able to support communications for some special scenarios not supported by 4G networks (e.g., for high-speed train users who can travel up to 500 km/hour). This articles proposes a potential 5G cellular architecture and discuss some promising technologies that can be deployed to deliver 5G requirements."
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