System Haptics on the iPhone 7. Apple introduced the Taptic Engine with the iPhone 6s, where it replaced the old vibration motor and was also used to provide haptic feedback for when you activated 3D Touch. This year with the iPhone 7, Apple has improved the Taptic Engine and it plays a critical role in simulating the press of the Home button, which is no longer a physical button.
The Dietary Guidelines for Americans 2010 recommends that sedentary teenage girls consume 1,800 calories per day. Active teenage girls get daily physical activity that is equivalent to walking more than 3 miles per day at 3 to 4 miles per hour. These teens need 2,400 calories per day.
The Average Caloric Intake of Women. If you're a woman adjusting your caloric intake, you may wonder how much you should be eating each day. There is no magic number, as the recommended daily amount for anyone is different based on gender, height, weight and activity level. A woman 18 to 35 years of age who weighs 132 lbs., for example, should be eating about 2,050 calories a day to maintain her weight, according to the Lifestyle Lounge website.