The legacy version of Parallels Clients should be used with Parallels Remote Application Server v15.0 and older.
The new mobile client (iOS/ Android) should be used with Parallels Remote Application Server Version 15.5. The Parallels mobile client is approved for the following Operating Systems
- iOS 8.0 or higher (iPhone and iPad)
- Android 4.0 or higher
and can be downloaded from here:
- iOS: https://itunes.apple.com/app/id1129911695
- Android: https://play.google.com/store/apps/details?id=com.parallels.client
More information regarding the new mobile clients: