The last software upgrade has made the device hard to use, very slow to react.

[AC Question]

The device is a Samsung S4 phone - When clicking on any icon/app, you have to press it several times. Even though it looks like you've already selected it nothing happens. Sometimes when you press the one icon, the app beside it open even though you clearly select the correct app. This will happen over and over. Prior the upgrade, it worked as expected. Thanks for any help. The last upgrade was about 4 months ago.

 

[B. Diddy]

Welcome to Android Central! Try wiping the cache partition: http://support.t-mobile.com/docs/DOC-5744