I have sony xperia ZR , when i use underwater my phone dewy . i think xperia ZR can use at underwater without problem . But why my phone dewy after i use underwater.?
Yes it is waterproof but over time a seal may have decayed thus not forming a complete seal - You may wish to have your phone inspected and a vacuum test carried out - Contact Xperia care for more details http://www.sonymobile.com/global-en/support/contact-us/
