How i verify the digital signature on the smartphone?

To verify a digital signature on a smartphone, you typically need a compatible app or software that supports digital signatures, such as a PDF reader or a specific signing app. Open the document containing the digital signature and look for an option to verify it, often found in the app's settings or tools menu. The app will check the signature against the public key of the signer to confirm its authenticity and integrity. Ensure you have the necessary public key or certificate to complete the verification process.