I realize it's mandatory from a marketing perspective, but how often is it used?
Accidentally jumping in the pool/ocean/lake with your phone. But past that, I'm not often in submerged situations.
i've yet to be so unfortunate, but i've met a lot of people with a 'I dropped my phone in the toilet so it's in a bag of rice' story.
let's hope they throw that rice out at the end of the process.
I live in an area where's it very humid and rains a lot. My phones get wet, a lot, just due to nature. I had one die after I got caught in a massive squall line at an outdoor concert on what was supposed to be a sunny day.
So yeah I would have needed a new phone tomorrow if it wasn't for my phone being waterproof. This kind of stuff happens all the time. I've lost many things from water damage. So many people used to complain about Apple denying warranty claims from water damage from the device just being in a humid area for a long time, now that just doesn't happen.
I never once lost a phone to water damage, despite most of the phones I've owned not being waterproof.
My pocket made of regular fabric seems to be sufficient protection.
Screen on the phone died.
I see the point of waterproofing phones after that.
This is the main use case, but it's not to be dismissed considering this is a very common cause of phone failure. If this doubles the lifespan of your phone then it effectively ~halves the cost. Which is a big deal when phones are as expensive as they are.
Also, generally people spend an awful lot of money on things out of vanity and social pressure, regardless of their needs and if it is a good decision. Look at new cars prices and how most vehicles purchases are usually overkill for everyone. The most sold car in the US are the Ford F series , Chevy Silverado and Dodge Ram trucks before a number of high end SUV. Sure people are free to buy whatever they want but a Honda Fit would be enough for large majority of them and be a smarter financial decision[2]. They mostly do it because they can, not because they need.
[1] which has become fairly decent for anyone accross all ranges in the last few years.
[2] I am not sure it is still sold in the US but I could have chosen another example of a smaller and more affordable vehicle.
Low end Android phones just plain suck when it comes to performance and battery life. Not to mention they rarely get operating system updates.
If you did force me to buy an Android phone, it would be the Pixel.
How did they talk on their phone for an hour without realizing their phone was underwater?
nor does she care about operating system updates.
The customer was probably talking on their landline phone for the hour.