How do I know if a phone complies with the telecoms new "standards"?

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antiseptic18

Member
Nov 8, 2019
20
1
Nokia 7 Plus
Earlier this year the telecoms disconnected those who didn't want to buy new phones because of the 4g/5g "upgrade", and that even if your phone is physically (as in hardware) compatible with the supposedly new network, you still got the boot.

So, how do I tell if a phone is compatible with the new "standards"?