iPhone user shares 'lesser known' feature praised as an 'absolute game changer'

One iPhone user has discovered one of the device's best 'lesser known' features, and it could prove to be a game changer if you're ever on the phone in a loud environment.

Apple packs so many great features into every new iPhone that it's bound to cause some to go unnoticed, yet they could transform your experience using the device and even prove to be life-saving in some scenarios.

Sometimes all it takes is a post on social media to alert you to the hidden tip, and that's what many on Reddit have experienced after learning about an incredibly handy way of improving your voice on calls.

We've all had those moments when you're on the phone in a loud environment and the person on the other end simply can't hear you, and that's especially an issue when using AirPods that are naturally further away from your voice.

You're left in a conundrum though, as you want the boosted volume of your phone's speaker but with the convenience and comfort of audio through the earphones — and you'll be delighted to learn that there's a way to combine the best of both worlds.

As shared on the r/iphone subreddit, one user points out the 'game-changing' ability to change your audio input while on a call, allowing you to maintain incoming audio through your headphones while switching the microphone output to the device itself.

So long as you're on the latest update, you'll want to head into the Settings menu, navigate to the Sounds & Haptics section, and then find the Input option.

Changing this setting can make your voice sound much clearer in noisy environments (Getty Stock)

Changing this to 'iPhone Microphone' will mean that your phone will be the source by default when you answer a call, saving you the need to change it during the conversation every single time — just remember that's the case if you answer a call with the phone still in your pocket.

You can also enable this during an active call if you only want it for that specific conversation, and you can also adjust the microphone settings to increase the isolation of your voice if the person you're speaking to needs a little extra help hearing you clearly.

"I am so glad you mentioned this, because I saw a guy with headphones in talking into the bottom of his phone and I thought he was a bit weird," joked one commenter, with another even suggesting that they use the setting in conjunction with their hearing aids to have a much better experience.