The error message associated with com.samsung.faceservice seems to have become a common occurrence on the Samsung Galaxy S7 . There is a very simple solution using the manual package disabling function.
Step 1: Download Package Disabler PRO and double check you are on the correct software versions
Step 2: Navigate to the manual package section found on the menu on the top right of the application. Enter the name "com.samsung.faceservice" and select to disable.
Hope this has been helpful!
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