Embodiments of this application disclose a profile transmission method, a related device, and a storage medium, to ensure that a terminal can download a profile to a corresponding OS. This improves accuracy of downloading the profile by the terminal. The method in the embodiments of this application includes: when the terminal runs a first operating system OS, obtaining, by the terminal, a second OS identifier, where the second OS identifier matches a second profile; switching, by the terminal, to a second OS based on the second OS identifier; sending, by the terminal, a target message to a server, where the target message is used to request the second profile; and obtaining, by the terminal, the second profile from the server.