For some unknown reason, Samsung and Google decided to remove “Ok Google from any screen” option from Galaxy S6 and S6 edge. It was available when the Galaxy S6 launched, but after a week, “From any screen” toggle just disappeared from the Galaxy S6 devices without even any update to the Google Search app.
This had many of us pissed off, and we still are. But we thought we’d bring smiles to S6 users when we discovered that the latest Google Search app from Android M brings back the “From any screen” toggle to Galaxy S6, but our enthusiasm soon died when we tried to set it up and it repeatedly gave us the following error: “Can’t use the microphone. Restart your device.”
But no, even restarting the device doesn’t help. So looks like Galaxy S6 users would still have to live without the “From any screen” option for Google now. For those who want to try, grab the Google Search APK from the download link below and install it like you’d install any other APK file on your Galaxy S6.