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.
Teenage Girls. Understanding how many calories a day your teenage daughter should consume will help you guide her efforts to maintain, lose or gain weight. Up to age 13, girls should take in 1,400 to 2,200 calories daily, depending on how much physical activity they regularly pursue. The more active your daughter, the more calories she should consume. Girls ages 14 through 18 need 1,800 to 2,400 calories a day, again depending on physical activity.