Mum saved the life of her baby girl with the help of an unlikely hero – Siri, the iPhone app.

Stacey Gleeson from Cairns, noticed on the baby monitor that her daughter had turned blue and rushed in to discover her one-year-old daughter Giana had stopped breathing.

“I picked her up and sat down with her on the floor and as I checked her airways .. I looked over and remembered my phone,” Mrs Gleeson told 7 News.

In a panic, she had dropped her iPhone in the doorway, luckily she remembered Siri’s voice activation function.

“Hey Siri, call the ambulance,” she yelled, prompting her mobile to automatically dial for help.

“And then before I knew it the ambulance was on its way and Giana was breathing again.”

Mr Gleeson, who is often away on duty with the Navy, said the few seconds of time saved could have made all the difference.

“It might have given the precious moments Stacey needed to revive Giana,” he said.

The parents of a now happy and healthy Giana are urging others to activate Siri on their phones.

“Kids .. everybody, everybody should be aware of the abilities of their phone,” Mr Gleeson said.

“It’s helped save our daughter’s life and I never thought I’d have to go through something like that,” Mrs Gleeson added.

In the latest iPhones and iPads, there is an option for Siri to be activated simple by saying “hey Siri”.

To turn on Siri on your iPhone, access the ‘settings’ menu, then ‘general’, and follow the prompts.

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Image via 7 news