I9++i other application installation problem

Hello,
i purchased i9++i china mobile clone of iphone model no. 1241
i use this phone as storage by usb calbe connection
copy images, audio and videos those are working well
i try to install java application of games in my mobile it will displaying as error "failed to install"
so plz guide me wat i have to do for instalting new app. on my phone
it is MTK 6225 phone
how do i found version
i search no. of websites but helpless
if anybody found any software related to above phone plz write in details how to install etc. etc.
thanx in advance