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These phone station can be used as wifi or short range 5g base station.

Plus not everyone have smartphone and these maybe the only way those on the street especially the homeless can call others.

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Sure, but you do not need a smartphone to make calls. A feature phone can be had for < £20 (and the battery will last a looong time). I wouldn't be surprised if charities were already giving them away and many homeless already had one.

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