How to solve the problem that mi band 7 can't connect to a mobile phone?

Mi band 7 can't connect to the phone. First, make sure Bluetooth is turned on. The specific connection operation is as follows:

Tools/materials: Xiaomi 1 1, MIUI 13, Xiaomi Sports Health 4.3. 1, Setup, mi band 7.

1. Open your phone and click Settings.

2. Click on Bluetooth.

3. Find the Bluetooth button and turn it on.

4. Open Xiaomi Sports Health, click the plus sign and click Add Device.

5. Follow the prompts to see if mi band 7 is connected.