CompTIA A+ 220-1102 Practice Question

Checking the available storage space on the device is the most appropriate initial troubleshooting step because insufficient storage is a common reason for app update failures. If there is not enough free space, the update cannot be downloaded and installed.

Restarting the device, while sometimes helpful, does not address the underlying cause of the issue if storage space is insufficient. Uninstalling and reinstalling the app can resolve certain app-related issues but is not the most efficient first step for an update problem. Updating the mobile OS is generally a good practice but is less likely to directly resolve an app update issue compared to checking storage space.