Make a Speakerphone Call with Siri from iPhone
You almost certainly know that Siri can make phone calls from the iPhone with voice commands, but with new versions of iOS you have another great option; you can make calls that are automatically set to be on speaker mode.
This Siri speakerphone call trick is particularly useful with “Hey Siri” voice activation, since you can make calls entirely hands free from iPhone, from the desk, in the car, or even from across the room if need be.