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I received a pdf digitally signed. It is diplaying question mark "signature not verified". In laptop and validate the signature. How to do on mobile Acrobat reader app Android mobile.
Hope you are doing well.
Sorry for the delayed response. There is no option to verify the digital signatures in the PDF on a mobile application.
The digital signatures do not work on the Adobe Acrobat Reader mobile application.
You will be able to view the signature on the PDF.
However, there is no option to add or verify the digital signature on the mobile device.
You will need the desktop version of the application in order to verify the signature.
Hope that answers your query.
Let us know if you have any questions.