NO. To receive support from the WebViewer, you need to download the "RemoteCall remote support" app from the Google Play Store.
Download link : RemoteCall remote support app (Android)
Also, you can download it by opening the website www.113366.io from a mobile browser and click #2 "Mobile support".
* Google Play Store > RemoteCall 구글 플레이스토어 > 리모트콜 원격지원 앱