Iphone fitness records only show applewatch data.

1. First, connect the device to a stable WiFi connection power supply. These two steps must be linked together steadily.

2. Secondly, click on the setting option, then click on the account, click on iCloud, then click on the health option, then turn it off and on again, and then lock the screen for an hour.

3. Finally unlock the device, click Settings, click Account, click iCloud, iCloud Cloud Backup, and then click Backup Now.