Don't save the call record after Xiaomi updates.

Does the subject want to ask, "What is the reason why Xiaomi doesn't save the call record after updating?" The reasons are: user demand changes and system optimization.

1. Changes in user needs: With the constant changes in user needs, users no longer need to keep call records, but pay more attention to privacy protection and system optimization. Therefore, Xiaomi does not save the call record after updating to meet the needs of users' changing needs.

2. System optimization: Xiaomi does not save the call record after the update, so as to optimize the system performance. Not saving can reduce the system burden and improve the system operation efficiency.