(1) For firmware versions older than 2.0.0 (such as 1.5.X, 1.6.X, or 1.7.X, etc.):
Connected: i appears on the upper right corner of the coffee machine’s screen.
Disconnected: ! appears on the upper right corner of the coffee machine’s screen.
(2) For firmware versions newer than 2.0.0 (such as 2.0.X and so on):
Connected: WiFi: O appears on the coffee machine’s screen.
Disconnected: WiFi: X appears on the coffee machine’s screen.