The honest answer is that subways are one of the few places where Bluetooth loses :)
You can tweak codecs and placement and it will get better but there will always be stations that swamp it.
My solution was to keep a tiny wired fallback in the bag a USB‑C dongle and slim cable for the platform and first minute of the ride then back to wireless.
Also download your playlist so the app is not juggling network handoffs during the exact moment the radio link is fragile.
Simple and reliable. 🔌🎧✅
