Adobe Digital Signature not work in phone / tablet ?

@yian_ying_2567 short answer no. The mobile apps for Acrobat Pro are designed to handle simpler electronic signatures, which are created by drawing or typing your name. But Adobe Acrobat Sign, a separate service, could send documents for a cloud-based digital signature request that can be fulfilled on a mobile device, the direct use of a personal digital ID file on a phone or tablet is not a supported function of the Acrobat mobile app itself.