Salesforce retired the Salesforce mobile web experience with the Summer ’20 release. Previously you were able to access the Salesforce mobile app experience on your device in two ways, by installing the downloadable Salesforce mobile app from Google Play or the App Store or via a supported mobile browser. Salesforce removed access to Salesforce on your browser, i.e., the mobile web experience. Starting with the Summer ’20 release, you need to have the Salesforce mobile app installed on your device or use Lightning Experience on iPad Safari.  

As a result of this update, Provar can no longer be used to test Salesforce on mobile devices via a mobile browser. 

Note: This change only applies to Salesforce. You can still leverage Provar to test other web-based applications on mobile devices.