Install 7-Zip if you do not have a RAR extractor.
Try downloading the file again from a different mirror site. Download Android Assistant4 rar
Select or "Extract to [Folder Name]" using your archive software. 4. Install the Application Open the extracted folder. Install 7-Zip if you do not have a RAR extractor
Since this is an older application, it is unlikely to be on the Google Play Store. You will need to find it on a third-party repository. Download Android Assistant4 rar