Unhappy [Q] downloading problems in Samsung S4 GT-i9505

Respected Senior Members,
I am using Samsung S4 GT-i9505, and i am having a problem in it, i using Kitkat 4.4.2, there are some issues i tried to search a lot to find the solution but i couldn't , all things are working fine but viber and whatsapp can't download any pictures received on it , i also cannot send any pictures videos , it says sharing failed , also if i tried to download something from my browser it is not downloading , plz plz help me i ev tried to install TWRP recovery but KIES says device not supported and also i ev installed the drivers but it cannot connect with my computer,Debuging mode activated, please help me.