How to make an iPhone speakerphone call using only Siri

After triggering Siri by holding down the home button or saying "Hey Siri," all you have to do (in theory) is add "using speaker" or "using speakerphone" to a call request — for example, "Call Walgreens using speakerphone."

It should be noted, though, that unless you have the person in your iOS Contacts list, you can't just dial an individual using their name — you have to speak their phone number instead. With businesses and other organizations, Siri may also prompt you to pick from several options if there are multiple matching locations, especially in the same city.

There can be other potential obstacles to going fully hands-free. "Hey Siri" requires iOS 9 later, and can only be used without plug-in power on the iPhone 6s and 7.

Also, "using speakerphone" can potentially be more reliable than "using speaker," and if Siri doesn't interpret you correctly you'll have to turn on the speakerphone manually.