Use Client Hints Sec-CH-UA-Mobile header to detect mobile #962
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Chrome now sends Client Hint headers and a frozen UA string in newer versions. See this post for a full explanation:
https://developer.chrome.com/docs/privacy-security/user-agent-client-hints
Sec-CH-UA-Mobile
specifically is a "low-entropy hint" which means it is sent with every request. See:https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Platform
This partially resolves the issue in #906 although I didn't do anything with tablet detection.