Delete device push message:
1. On the “Me” page>Messages.
2. Click the pencil icon in the upper right corner.
3. Then you can delete the device push messages you want to delete.
Delete device record:
1. Click on the device to enter the device settings.
2. Find Activity Record and click the pencil icon to delete.
3. As not all device settings support deleting device records, you can also delete device records by resetting the device to factory setting.