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Don’t ever hand your phone to the cops
(www.theverge.com)
This is a most excellent place for technology news and articles.
Maybe your phone only uses 5GHz wifi if internet speed is good enough that it is worth it. There is usually a switch that is called something like maximum compatibility where it turns WiFi down to 2.4GHz
This on iPhone: https://timesofindia.indiatimes.com/gadgets-news/explained-maximum-compatibility-option-within-personal-hotspot-on-iphone/articleshow/95916069.cms