[bigguy_132]

I am using a HTC M9 and having issues opening PDF's. Some open and some do not. The ones that do not it tries to open it and says Restore SMS... There is a PDF viewer installed on the phone and the ones that do open they open with no issues.

I cleared the default apps and cleared the default apps on the actual Messenger App.

Any ideas?

[B. Diddy]

Are all of the issues with PDFs that are being sent via messaging? What happens if you download the PDF first to the phone, rather than trying to open it right in the Messaging app?

[bigguy_132]

They are being sent via Yahoo Mail and Gmail. They aren't being sent via Messaging. I have the same issue if the PDF is downloaded to the phone and attempted to be opened from there as well.

Forwarded the e-mail to myself and opened it using my Google Pixel so I know the PDF isn't corrupted or not able to be opened.

[B. Diddy]

Try wiping the cache partition: https://support.t-mobile.com/docs/DOC-31522

[bigguy_132]

I wiped the cache last night and the same issues persists. This one really has me puzzled.

[B. Diddy]

Are you able to clear the app cache and data for the PDF viewer app?