# 蓝牙常见问题

* **[可选属性显式设置为undefined报401无效参数](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/bluetooth-faq-401-invalid-parameter)**   
* **[如何抓取蓝牙HCI日志](https://developer.huawei.com/consumer/cn/doc/harmonyos-guides/bluetooth-hci-log-capture)**