Just one click could change the wifi status and mobile data.
When wifi on, the data is off, and it turns into wifi, the data is on.
When wifi off, the data is on, and it turns into wifi on, the data is off.
When wifi on, the data is on, and it turns to wifi on, the data is off.
When wifi off, the data is off, and it turns into wifi on, the data is off.