ios – Tips on how to deactivate the WatchConnectivity session?

I’m utilizing Apple’s WatchConnectivity framework to develop an iOS app with a companion WatchOS app.

On iOS facet, after I open the app, I must manually activate the WCSession to speak with the Apple Watch like this

if ([WCSession isSupported]) {
    self.wcSession = [WCSession defaultSession];
    self.wcSession.delegate = self;
    [self.wcSession activateSession];
}

After I end all mandatory communications between the iPhone and the Apple Watch, I need to deactivate the WCSession for the reason that activation of WCSession is power consuming. I’ve regarded by means of the WatchConnectivity API however have not discovered a option to deactivate it. I can’t shutdown the connection until I give up the app on the iPhone and reopen it once more.

Is there a option to deactivate the WCSession? Thanks very a lot.