Share your experience!
will my phone become non-water resistent if the ring gone?
I would think so, stop by a Sony repair center
I had the same problem. silver ring detached within the first week. :((
I have the same problem, mine went missing yesterday 
I think the phone still is waterproof.
I have disassembled the Z1. The headphone jack are guled to the midframe tighlty. There is a several millimetres width of circle sticker under the silver ring between the headphone jack and midframe. So the headphone jack should keep waterproof although the ring lost.
I have the same problem 😕
Anyway, that ring has only the decorative sense. So don't worry.
The phone is still water resistant as I have the same situation as the metal ring as came off 2weeks ago. I message sony and they said they can repair it for me but it need to cost so I didn't bother as it is there manufacture fault for not glueing it tight enough or they should of thought about the design for the head jack ring around it.
It is still water resistant which i am still happy about it as i can go swimming with my friends or txt in the shower for important txt messages or rinse the phone off if i have mud on there from bike riding.
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