I am seeing more and more blogs and videos covering the 5G issues which are mainly centred around the tiny performance radius. I would test it contract free first before committing.
Is that UK or US biased videos? The US has some different deployments of the 5G NR technology that we don't have.
In the UK a lot of 5G at the moment is on the 3.5 to 3.8 GHz spectrum which means you need to be quite close to the mast. Three for example has been adding a lot of their new Phase 7 or Phase 8 monopole masts to add this coverage in built up areas. If you are close, and the usage is low, you can see insane speeds (reports of 800 Mbps to 1.2 Gbps).
The operators are gradually adding 5G to lower frequencies, Vodafone in London has a sharing scheme with 4G on the 2100 MHz spectrum, known as DSS, as one example. This shares the spectrum with the two different transmissions.
4G on the other hand based on personal experience worked pretty well for me performance wise 120 down and about 70 up even in the evenings. This was also indoor performance with phone as the modem.
I've seen 400 Mbps on 4G on EE in some areas, but the average is a lot lower given number of users, 40 to 50 Mbps download and 15 to 25 Mbps upload would be more average figures.
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