Is 5G wireless or cellular?

Like its predecessors, 5G networks are cellular networks , in which the service area is divided into small geographical areas called cells. All 5G wireless devices in a cell are connected to the Internet and telephone network by radio waves through a local antenna in the cell.

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Why can 5G pass through walls?

5G has a similar RF frequency hierarchy. If you have a clean, fast high frequency connection it will automatically operate using that one. If not, it will fall back to a lower frequency connection (one able to penetrate obstacles and walls better) and has a longer range.

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