XZp Not So Waterproof - USB port Vulnerability?

[Sebi6673]

I've been playing around the service menu and tested the Pressure Sensor. In a solid waterproof phone, pressure should remain steady when acted upon by outside forces. 

I simply tried to moderately blow some air into the USB port and there's a notable difference. Also removed the sim cap and sucked on the port. Air was clearly passing through. 

I'm curious if it's just my phone with this issue in which case I'll replace it, or if it's a design fault, in which case you shouldn't submerge it. 

In the screenshots you'll see the pressure difference. So please test this by accessing the service menu *#*#service#*#*, > tests > pressure sensor and simply blow some air into it.

[comrade_ethan]

Hi Sebi6673, I confirm that this does happen to my device.  There is a 1-2 milliBar difference when blowing into the USB-C port. 

[stanlykubrick]

Please keep in mind that water is thicker than air. Also, you are blowing the air into the port... under pressure from your lungs... I am sure that if you put water in your mouth and squirted it into the port that you would ruin the phone. Water proofing assumes the water is not under enough pressure to infiltrate the inside of the phone. I bet the same test on any "waterproof" phone would provide the same results.

[Kunicross]

Oh I didn't know there was an pressure sensor - but if you would put the sensor inside a perfect sealed phone it would not work at all wouldn't it? 

I trust the the phone and its ports will usually life up to its classification both the 3.5 mm and USB-Type-C should not let water into the phone. I saw no different reports from the people who tried it so far. 

[Dutchy007]

If the pressure sensor is the same as in the Z2, pressing the screen slightly while being CLOSED should make the sensor go UP. The pressure in the phone increases because you press on it.

Now don't go mad and press like an idiot, just gently press. Or just don't if you don't trust it.

^ This means the phone is basicaly waterproof afaik.

Repeating the same with an open phone should yield the opposite result.