With Whats Messenger App you can use the web versions of popular messengers on your iPad. All chats, contacts and media from your iPhone are now available on your iPad!

Supports all functions including the camera, voice messages, pictures, videos and PDF documents.

______________________________________
Setup:
1. launch the app on your iPad.
2. open messenger on your iPhone/Smartphone
3. select "Settings" -> Web/Desktop on the iPhone
4. hold the camera on the iPad

Notice: PDFs are saved in 
Files App -> On my iPad -> Messenger Pro