Share your experience!
Hello,
Today, after 4 months of wearing it, the smart band is dead 
It cannot be turned on.
In addition, tried to charge it (using the original Z2 charger) with no success. No led lights at all. It only become warm.
Any suggestions anybody?
Have you tried to press the power button longer?
Sorry,in this case,try to stop by a sony service:
http://www.sonymobile.com/global-en/support/contact-us/
Thank you.
Keep us updated.
Still no response from Sony
!
Wait some more,sorry but there isn't too much we can do for you.