Doesn't work with the android version. You can instead preview the unsigned transaction on the wallet where you first created it and click on the qr code icon to see the qr code. Then on the android phone go to send and tap the camera icon. Take a pic of the qr code and then tap sign and broadcast.
Thanks,
I figured it wouldn't work with Android, but I do have two Electrum wallets open. So two Electrum installations are online right now with two out of 3 keys on two different computers. Both PC Electrum wallets are connected to the same server.
When I go to PC 1 and try to send a tx , shouldn't PC 2 be receiving a popup when I press the Cosign button?