Hi guys i have just started using my new galaxy s4 All working fine but one thing youtube app the problem is that my gmail main account Is not alowed to use youtube. So i have added my second gmail account which i also use daily and this one is allowed to use youtube. but im unable to make the youtube app to use thit specific account. so im unable to use youtube 100% i can only watch videos and not even all of them cause for some videos you must be logged in. so i cannot upload or mansge my youtube account etc... please help. any help or advise is much apresciated. thanks in advance.