[Yaseen Ali]

dear team, I m currently residing In Japan, I purchased a Sony Xperia Z3 phone with a operator. but now I am facing some problem in the lock/unlock swith of this phone. I do not know the guaranty/ warranty status of this phone as it was purchased at zero yen. one more thing is that now I am no more user of Au operator. kindly suggest me what to do to comeout of the issue.

[B. Diddy]

Welcome to Android Central! What kind of problem with the Power button are you having? What is Zero Yen? Is that a reseller, or an auction site like eBay? You can always contact Sony and find out if your phone qualifies for warranty repair. Otherwise, take it to a local phone repair shop--if it's just the Power button, the cost of repair might not be that high.