Answer :

Final answer:

The PHD test is mandatory at every install on Phone/Tablet devices to enhance security and prevent harmful content.


Explanation:

The test that is mandatory at every install on your Phone/Tablet is PHD (Package Hardening Detector).

PHD ensures that the software package being installed doesn't contain any harmful content or malware, safeguarding the device and user data.

It is a critical security measure to prevent potential threats and ensure a safe operating environment.


Learn more about mandatory test at installation here:

https://brainly.com/question/38607286