The UK has banned Huawei from 'core' parts of its 5G network. Here's what that actually means.

· The UK announced on Tuesday it would allow Chinese tech firm Huawei to play a limited role in building its 5G networks.
· Guidance issued by the UK's National Cybersecurity Center (NCSC) bans Huawei from building any "core" equipment and limits the amount of "non-core" kit it can install to 35% of the overall network.
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