for iOS 9.1 software

See apps you’ve opened. Double-click the Home button when iPhone is
unlocked. See .
Use Siri or Voice Control. Press and hold the Home button. See
and .
On iPhone 5s and later, you can use the sensor in the Home button to
read your fingerprint, instead of using your passcode to unlock iPhone or
Apple ID password to make purchases in the iTunes Store, App Store,
and iBooks Store. See . If you have iPhone 6, iPhone 6 Plus, or
later, you can also use the Touch ID sensor for authentication when
using Apple Pay (in countries where Apple Pay is supported) to make a
purchase in a store or from within an app. See and .
You can also use the Home button to turn accessibility features on or off.
See .
Volume controls
When you’re on the phone or listening to songs, movies, or other media,
the buttons on the side of iPhone adjust the audio volume. Otherwise, the
buttons control the volume for the ringer, alerts, and other sound effects.
WARNING: For important information about avoiding hearing loss, see
.
Start at home
Make
requests Voice Control
Touch ID
Touch ID Apple Pay
Accessibility Shortcut
Important safety information