Touch Screen sensitivity issue

I am having a touchscreen sensitivity issue with my samsung galaxy S6 and there’s different codes to get the the TSP menu like *#2663# to fix the issue but it doesn’t work for Republic Wireless. Does anyone know the code to get to that menu?

I have been dealing with this problem, too, w/ Samsung 6. The touchscreen is slow. Good luck. Everything I have tried doesn’t work ( factory reset, clean cache, etc.) Let me know if you found a solution.

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