Pros and Cons of 4G and 5G

Technology
Pros
Cons

4G

Mature networks (widely deployed, widespread coverage, a lot of nice features added over the years)

A lot of frequency bands allocated to 4G over the years (more bands/bandwidths => faster speeds, larger network capacity)

Well-proven technology, optimised networks, stable performance

Loaded networks (a lot of user terminals in the field, high usage => low speeds)

Frequency migration from 4G to 5G: frequencies are being moved from 4G to 5G and this process will continue => leaving less capacity on 4G over time

5G

Lower latencies than 4G (in some bands / configurations)

More newly allocated frequency bands with wider bandwidths than 4G (more bands/bandwidths => faster speeds, larger network capacity)

Can aggregate 4G + 5G => getting benefits of both

Unloaded / empty networks (much fewer user terminals in use compared to 4G). So if one found 5G at this point, she will likely get full possible capacity.

Way shorter range to shore than 4G.

Network deployment at early stages, patchy coverage (by far not as widely available as 4G), might be unstable performance for some time after rollout before networks got optimised

Some fancy network features (e.g.: MIMO, 256QAM, etc) may not be available immediately during early stages of deployment

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