Yes mine has stopped working to, roughly 2-3 days ago just randomly stopped working. I don't know if it's a glitch in the software as the fingerprint bit still works.
If the power key on the Xperia™ device has stopped working and doesn't activate the screen, it can either be a software problem or a problem related to the hardware.
If the power key is springy, but nothing happens, for example, the screen doesn't activate, the contact beneath button could be defect. However, it may also be an issue related to the software. Therefore, perform a software repair using Xperia CompanionNote!Always back up all personal data before performing a software repair. All data in the internal memory is overwritten during a software repair. Content on an external SD card is kept. If the problem with the power key persists, contact a Sony Mobile repair partner to have the smartphone or tablet examined, and get a quotation for a repair.
If the power key isn't responding, feels dead and isn't springy, it is most likely a hardware problem. Contact a Sony Mobile repair partner to have the smartphone or tablet examined, and get a quotation for a repair.
