lock button acting strange .......

[gta]

hey guys my lock button is acting strange it unlocks fine but when I lock the device it sometimes dosent lock or opens the power off screen .... I need to press it for a while for locking the device ... I think it is software problem anybody else facing the same problem? ?

 

[msj003]

mee too...
same issue....

any help...plzzzzz

 

[sarfarazkarimi]

me too guys....
is anybody there to help us for the issue pleaseeeeee.,.,.,.,.