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This documents how one can wirelessly debug a Firefox for Android app over Wi-Fi, without requiring a USB cable. The steps here differ from the official documentation at https://developer.android.com/tools/adb#connect-to-a-device-over-wi-fi in the following ways: - Omitted unnecessary dependency on Android Studio. - Added instruction to look up the IP address from Internet / Wi-Fi settings instead of relying on the displayed IP address. The latter is not reliable, e.g. when a VPN is enabled. - Added explicit instruction to use "adb connect" to avoid dependency on mDNS. Differential Revision: https://phabricator.services.mozilla.com/D193390
