Connect IQ not support Vivosmart 4??

The only vivo series devices that support CIQ are the vivoactives.

I can get Heart rate With this device or not?

Or by other methods

Thank you for reply.

I'm not sure if the v4s supports this, but you may be able to broadcast HR using ant and then have an app on the phone that will connect to an ant HRM.

if i used vivoactive@3 . i can use connect iq for heart rate, step count

yes, the va3 supports CIQ

thank you