A technician receives a help desk ticket from a user who is unable to update a phone. The technician investigates the issue and notices the following error message: Insufficient storage space. While analyzing the phone, the technician does not discover any third-party applications or photos. Which of the following is the best way to resolve the issue?


A. Exchange the device for a newer one.
B. Upgrade the onboard storage.
C. Allocate more space by removing factory applications.
D. Move factory applications to external memory.