[fnoof]

An iPhone 12 weighs 164g [1], so, through the magic of the metric system, it needs to displace a minimum of 164ml of water to float.

The iPhone has an external volume of 14.67cm * 7.15cm * 0.74cm = 77.62cm^3 = 77.62ml. So it would need to be about 2x the volume to float.

[1] https://www.apple.com/iphone-12/specs/

[Freestyler_3]

Yeah thanks, I looked it up and got those numbers from calculations but wasn't sure if that was the right way to just calculate that because I am not familiar with it.

[kakkan]

Time to roll back this innovation and release the new iphone with 2x volume so that it'd float.

[brewdad]

Meet the new iPhone Air...

[justusthane]

Lifeproof used to make an add-on life jacket that fit around their cases.

https://duckduckgo.com/?t=ffab&q=lifeproof+case+life+jacket&...

[spfzero]

But then it would be heavier, and need to be even bigger than 2x.

[_ph_]

Might be an idea for a magsafe attachment: a floater :)