Latest Prestigio Silver POS user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; arm; Android 7.0; SILVER POS) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.164 YaBrowser/21.6.4.119.01 Safari/537.36	Yandex Browser 21	Android 7
Mozilla/5.0 (Linux; Android 7.0; SILVER POS Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/51.0.2704.91 Safari/537.36	Chrome Webview 51	Android 7