one more bad experience about buying handfree~~~~~~~~~~~~~~~~

when i'm going back my home
i see there's a hawker who is saling handfree
i see it and i check it immediately if there's any sutible for my phone

once is sutible
but when i go back my home and try again
my phone can't detect the handfree
oh my god~~~i go to exchange
but no one can be detected~~~~
wt's going on~~~~~!?

today i go to shang's home
and he teach +2 , natalie , nicole and me PM

thx ~~~~~