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But my phone with USB-C, 2 SIM, SD card and headphone jack is alraedy waterproof. I literally wash it with soap and water to clean it...

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Waterproofing is a spectrum (https://support.apple.com/en-us/HT207043), and seals fail over time. The fewer holes from the outside of the device to the inside, the fewer points of failure for the waterproofing. It was an openly stated reason for the move, and the first Apple phones to ditch the jack were the first to hit IP67 as a result.

They just said that to make people feel better. My Samsung A8 2018 with jack port is IP68/IP67.

Sure, and those standards are immersion "up to 30 minutes" sort of scenarios. Do it day in and day out and the seals will fail over time.

Fewer seals, fewer seal failures. (Salt water can be fun on the metal contacts, too.) I expect Apple to go induction-only charging at some point, for similar reasons.

Yeah, but throwing away lot's of good features so that you can keep your phone underwater all day just doesn't make sense.

Waterproofing is possible right now and works for almost all normal use cases. No need to remove features.

What Apple is doing is definitely not for waterproofing.

> first to hit IP67

I don't know why you believe.

The first Apple phones to meet it, yes. I linked the Apple doc elsewhere in the thread about which ones meet which standards.

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