Open the Samsung Calculator app and tap on the ruler icon to access the tip calculator feature.
Swipe left on the heading bar until you reach the "Tip" section and tap on it.
Enter the subtotal amount, representing the total bill before adding the tip.
Tap on the tip percentage button and adjust the scroll wheel to set the desired tip percentage, then tap "Done".
Enter the number of people splitting the bill by tapping on the people button and adjusting the scroll wheel accordingly, then tap "Done".