Troubleshooting Steps for High-Speed Data Usage Threshold Notice

A.

The correct troubleshooting step to take first when a smartphone user receives a notice that they have reached a high-speed data usage threshold, despite unchanged usage behaviors, is to check network access permissions on recently loaded applications. Therefore, option A is the correct answer.

Explanation: When a smartphone user receives a notice that they have reached a high-speed data usage threshold, it is important to first determine the root cause of the issue. Option A suggests checking the network access permissions on recently loaded applications. This is a good first step because some applications may be consuming more data than the user realizes. For example, an application may be running in the background and consuming data without the user's knowledge.

Option B, limiting data usage to WiFi networks only, may help to reduce data usage going forward, but it does not address the root cause of the issue.

Option C, wiping the device and restoring to the factory default, is a drastic step that should only be taken as a last resort. This step will erase all data on the device, including any apps or settings that may be contributing to the high data usage.

Option D, changing the lock screen password, is not relevant to the issue of high-speed data usage and is therefore an incorrect answer.

In summary, when a smartphone user receives notice of high-speed data usage, it is important to first check network access permissions on recently loaded applications to determine if any apps are consuming more data than the user realizes.