Why cant my phone open documents

[Android Central Question]

Why can't my phone read documents sent on WhatsApp

 

[ManiacJoe]

Which phone?
Which version of android?
Which carrier?
Which document type(s)?
Do you have an app installed that can read the documents you are receiving?

 

[Rukbat]

Phones don't open documents, as Joe said, apps do. You need an app installed that can open the type of document you're getting - text? pdf? spreadsheet? They all take different apps.