i have a certain streaming app that begins with 'Mob' that kills my internet connection if i am on 3g (not wifi)
once i run it , and try to start a stream 3g stops working completely. if i fire up the browser, web pages just time out. If i switch off Mobile Internet then back on, everything returns to normal
This also happens with the UListen (allows you to listen to youtube videos without the video playing) app .
i can browse the videos no problem using the Ulistern app but as soon as i try to play one, 3g just stops. These are the only two apps that seems to do this to my phone
On wifi these two apps work fine.
Did it when i was rooted running CM11 too.