signing certificate problem

Dear all,
i Bought  certificate  from verysign but when i try it to real devices it is not give any changes to my mobile
. i asked before about warning messages that show up from mobiles when i am changing in address book and you recommended me to buy it.
can you tell me why it is not working ? how can i fix it to workk
deniro1974Asked:
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Mick BarryJava DeveloperCommented:
certificate won't stop warnings being displayed
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deniro1974Author Commented:
is there away to stop the warning message ? i posted my question asking to stop the message and the answer was to buy a certificate . what i have to do to stop the warniung message
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