I bout a Samsung Galaxy Note 10.1 exactly a year ago and it used to be perfect for all my usage. But lately it has become very slow. Sometimes opening an app or changing from one up to another can take more than 30sec. Also when I go the settings to check the storage information it keeps telling me I only have less than 500mb left even doe I have deleted a lot of files. Also on the storage screen it's supposed to try and calculate where the space has be allocated to e.g. how many gb for applications etc. but all that appears on that screen is a constant recalculation without actually calculating anything.
Any ideas what I could do?