[Xperia Z General] Ryland Johnson:
Hi,

Thanks for the reply. We are indeed on the same page.

I really don't want my initial post to be taken out of context. I am not criticising the Z, I own one. I am suggesting Sony may well have shot themselves in the foot regarding their publicity. Not every purchaser of this mobile will understand the intention of Sony manufacturing a water resistant phone. I dislike them even using the term water resistant as it is such a highly subjective term.

Water proof is less subjective. Water proof means what it says water will not enter. I can't think of a man made device that is water proof. I am not saying they don't exist I am merely saying I don't know of any.

Back to water resistance. May I take a liberty and side track this thread? I mean no confrontation by doing so. Take a look at the following.

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"Watches are often classified by watch manufacturers by their degree of water resistance which, due to the absence of official classification standards, roughly translates to the following (1 metre ≈ 3.29 feet):[5]

Water resistance rating Suitability Remarks

Water Resistant 3 ATM or 30 m Suitable for everyday use. Splash/rain resistant. NOT suitable for showering, bathing, swimming, snorkelling, water related work and fishing. NOT suitable for diving.

Water Resistant 5 ATM or 50 m Suitable for swimming, white water rafting, non-snorkelling water related work, and fishing. NOT suitable for diving.

Water Resistant 10 ATM or 100 m Suitable for recreational surfing, swimming, snorkelling, sailing and water sports. NOT suitable for diving.

Water Resistant 20 ATM or 200 m Suitable for professional marine activity, serious surface water sports and skin diving. Suitable for skin diving.

Diver's 100 m Minimum ISO standard (ISO 6425) for scuba diving at depths NOT suitable for saturation diving. Diver's 100 m and 150 m watches are generally old(er) watches.

Diver's 200 m or 300 m Suitable for scuba diving at depths NOT suitable for saturation diving. Typical ratings for contemporary diver's watches.

Diver's 300+ m for mixed-gas diving Suitable for saturation diving (helium enriched environment). Watches designed for mixed-gas diving will have the DIVER’S WATCH L M FOR MIXED-GAS DIVING additional marking to point this out.

Manufacturers water resistance classifications are interpretations and are not part of any ISO standard definition."

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In terms of a wrist watch this means a watch rated at 30M! is NOT suitable to even use in the shower? Take a look at the above attachment to see what an awful situation customers are in when we purchase a wrist watch. To me water resistant to 1ATM means just that, water will not enter said watch unless I take the watch below that depth...No no, not at all in terms of our wrist watches it means nothing of the sort. In fact a watch suitable for swimming has to have a rating of 50M that's over 160 feet! In real terms I have no idea how the watch industry gets away with their water resistant ratings. I will go further. Even within the industry different brands use different criteria!

Back to the Xperia Z. Still water has totally different properties to moving water. Pressure changes in accordance with not only depth but movement or flow of water across the device surfaces.

Now lets take the scenario of John Doe who thinks his Z is water proof and takes it swimming, water gets in, can you imagine the potential problems we would have as customers trying to convince the local Sony dealer we didn't take it sub aqua diving?

Now IF Sony had used a different advertising approach and shown a person using the Z in the rain or some such accidental situation we would have understood a lot better the phones realistic capabilities. The phone is not supposed to be used in water I suggest what Sony where trying to do was show this mobile can take an accidental spill or wet hands will not damage it nor perhaps the accidental dropping of it into the bath tub?

Hey. My objective has been achieved. I have started a debate and if that debate prevents a customer from making a genuine mistake I would be most satisfied. I wished I had known the watch criteria before I ruined a 10,000euro watch 20 years ago:( IN the shower!:crying: