Android 17 adds ECH support to make web browsing harder to track (reddit.com)
'ECH is about encrypting your TLS Client Hellos so that your ISP can’t easily track what websites you visit. It’s very similar to encrypting your DNS requests.
'It’s also kinda pointless right now because Cloudflare is basically the only company that uses it. 90% of your web activity will remain exposed with plaintext TLS client hellos.'