My phone prompts me to replace my memory card in order to avoid file loss

This alert is issued by your phone's memory card diagnostics feature. If your phone system detects an exception with the memory card (for example, the memory card is damaged), an error message will display. If you continue to use the memory card, stuttering, app errors, or data loss may occur.

If you receive such an error message, replace the memory card with a new one to prevent data loss.

If the issue persists, back up your data and take your device and the proof of purchase to an authorized Huawei Customer Service Center for assistance.