Could not access Skype on Symphony Mobile Phone

HI every one,
I am jamesloper,i have been suffering a problem for 3 month.I have a SYMPHONY mobile phone. Their have a Skype software but i can't use it.I have a Skype account but i can't login my Skype account from my mobile phone.I want to video call from Skype account.I use the internet connection from my mobile phone but i can't use Skype.It's very painful for me.I want to use Skype from my mobile phone.I don't understand which way i can solve this problem."So i want the solution about this problem".please give me solution as soon as possible.
Regard
jamesloper
