Exclamation [Q] Problem With MMX A110 Stock Earphone

Hey Friends,
I was using my MMX A110 for Past 2 Years now and and the stock earphone was also working fine.
But recently my friend just brought a Samsung's In-Earphone and Tested it on My Mobile .
MMX A110 was not supporting that Samsung's earphone.
Later, when tried my MMX A110 stock earphone i was shocked.
It was not supporting it too.
when i licked the jack and inserted it detected and music played but after some 2-3 min it again loose contact and music started playing on phone speaker.
What to do Now??