Chosen Solution
It was running very fast when I just got my phone, but it seems to be running slower and slower. It takes a long time to process simple stuff, like opening the setting menu, and loading messages. Sometimes the screen freezes when it multi-tasks.
Have you tried deleting some files from your phone? The reason why your phone is responding slowly might be because of how much memory is used up. Try deleting some unused files or back them up on a different device.
