CertMaster Labs are not available for use on mobile devices. For more information about the technical requirements for CertMaster Labs, see this article. Related articles What Are the Technical Requirements for Using CompTIA CertMaster Labs? How Do I Find My CertMaster Labs Access Keys After Purchase? How Do I Access CertMaster Labs Products Through My CompTIA SSO Account? All Getting Started Guide(s) Is the CertMaster Lab Environment a Simulation or a Virtual Machine (VM)?