Default How to set sd the default data source??

I was shocked when I discovered that the real internal storage is about 3.75 GB and it is quickly be full!!
I have bought SD Card ( 32 GB ) but the data of all applications like games and whatsapp.. etc them dictionary in the internal storage!! o_O I can't install a game with 1.5 g data cause the internal storage is full!! " message " !!! And the SD Card is empty!!! WTF!!
Incredible mobile!! But this is a big and huge mistake is there is no way to solve it! .. So is there any way to solve it and set SD default dictionary for all applications as internal storage guys ??


Thanks everyone..

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