"ev":{"opt":{"costtime":0,"scene":1020,"path":"pages/MFQ/comments/commentsList/commentsList","query":{"production_id":"241"},"referrerInfo":{}}},

"sys":{"batteryLevel":100,"version":"6.6.7","system":"iOS 11.3","windowHeight":672,"pixelRatio":3,"screenHeight":736,"language":"zh_CN","statusBarHeight":20,"windowWidth":414,"model":"iPhone 7 Plus<iPhone9,2>","screenWidth":414,"fontSizeSetting":16,"brand":"iPhone","platform":"ios","SDKVersion":"2.1.0"},

如上消息，场景值为 1020，但是 referrerInfo是空的。

在模拟器上，模拟1020是有的。