Can't open PDF on iPhone (Why the preview is BLANK)

1. Is this your corporate/organisation/enterprise/School Management iPhone? Then please contact the system administrator of your corporate//organisation/enterprise/School Management
2. If it is your device, in that case, do you have any profile installed by your corporate/organisation/enterprise/School Management?
   1. Erase the profile added by you If you have installed a profile on your own --> Install or remove configuration profiles on iPhone - Apple ...
   2. Or please contact the system administrator of the organisation who provided the profile to you

A corporate profile installed on your iPhone could potentially be contributing to the PDF not opening. Here's why:

• Restrictions: Corporate profiles can have restrictions placed on apps and functionalities. These restrictions might be limiting background activity for Mails, causing it to quit.
• Managed Apps: IT departments might deploy specific navigation apps through the profile, potentially conflicting with Mail Maps.
• Security Settings: Corporate profiles often have stricter security settings that could affect app behavior. This might be causing PDF openings for Mails.

Here's what you can do:

• Check with IT: The best course of action is to contact your IT department. They can explain the restrictions set by the corporate profile and see if Mail is affected. They might be able to adjust settings or suggest alternative navigation apps approved for corporate use.
• Look for App Conflicts: See if your IT department uses a different Mail app through the corporate profile. Conflicting apps might cause crashes.

Ask the sender to send it again in the correct format. Some pdf files open only with Acrobat Reader.

I have made a GIF to demonstrate PDF on email (I did not have any issue). Watch it below