Error Message with Samsung S4

[Akin Semowo]

Hello, I have a problem with my Samsung S4 which keeps giving me an error message "Unfortunately, the process android.process.acore has stopped" when I try to look up contacts, its very slow and eventually shows this message. I would appreciate your help

 

[UJ95x]

Welcome to Android Central!
Does this only happen when looking up contacts?
You can try wiping the cache partition and seeing if that gets rid of the issue.
There are instructions for that here: Reset: Samsung Galaxy S 4 | T-Mobile Support