Try these steps first if your Samsung Galaxy S7 or S7 Edge is experiencing touchscreen issues such as being over sensitive, under sensitive or having buttons and apps opening from a ghost.
-The code is *#2663#
-If this does not work then try *#*#2663#
-If these two do not work then look up your carrier/model and google it to find the TSP Update Code
Let me know if you need assistance.
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