What he can do:

• Share Files - phone filesystem will be a regular folder in linux, and
  like separate partition in windows
• Show notifications - you receive your phone notifications and see them on pc
• Answer messages from sms and messengers
• Control media playback - you can control play/pause/rewind your media playback on pc from phone,
  (windows version supports only vlc, linux most popular players),
  also you can install browser extension https://github.com/Kir-Push/LazyIr-Browser to
  control media from browser (youtube and most others sites with html5 video)
• Use phone as touchPad and keyboard
• Shared clipboard
• Pause media when receive incoming call
• Run pc command from phone
• See battery level
• Remove notifications from phone
• Ping device

All features modular, and can be disabled.

Similar project - https://github.com/KDE/kdeconnect-kde

Install instruction's see on - https://lazyir.info/