I have Samsung Note-2 mobile and Norton mobile security for virus protection but my mobile become slow whenever APPs update goes on. I could not even open contacts or dial anyone. Please suggest me how can i make my mobile fast and easy to use.
Sandra
Hi Sandra.
Welcome to the Norton Community Forums. 
I have not noticed any appreciable extra load put on my devices by NMS but if your device is stretched on resources, anything may cause a noticeable performance drop.
However it seems to me that the issue may be more the automatic update of apps when you want to do something else. I have my apps set to not auto update. Then when I have a free moment and a good internet connection I open Google Play, check what has an update and make the decision on whether to update or not. Have you tried that?