Chapter 3 Basics 36
Privacy
Privacy settings let you see and control which apps and system services have access to Location
Services, and to contacts, calendars, reminders, and photos.
Location Services lets location-based apps such as Reminders, Maps, and Camera gather and
use data indicating your location. Your approximate location is determined using available
information from cellular network data, local Wi-Fi networks (if you have Wi-Fi turned on), and
GPS (may not be available in all areas). The location data collected by Apple isn’t collected in a
form that personally identies you. When an app is using Location Services, appears in the
menu bar.
Turn Location Services on or o. Go to Settings > Privacy > Location Services. You can turn it o
for some or for all apps and services. If you turn o Location Services, you’re prompted to turn it
on again the next time an app or service tries to use it.
Turn Location Services o for system services. Several system services, such as compass
calibration and location-based iAds, use Location Services. To see their status, turn them on or
o, or show in the menu bar when these services use your location, go to Settings > Privacy >
Location Services > System Services.
Turn o access to private information. Go to Settings > Privacy. You can see which apps and
features have requested and been granted access to the following information:
•
Contacts
•
Calendar
•
Reminders
•
Photos
•
Bluetooth Sharing
•
Microphone
•
Twitter
•
Facebook
You can turn o each app’s access to each category of information. Review the terms and privacy
policy for each third-party app to understand how it uses the data it’s requesting.
Security
Security features help protect the information on your iPhone from being accessed by others.
Use a passcode with data protection
Initially, iPhone doesn’t require you to enter a passcode to unlock it. You can set a passcode that
must be entered each time you turn on or wake up iPhone.
Set a passcode. Go to Settings > General > Passcode & Fingerprint (iPhone 5s) or Settings >
General > Passcode Lock (other models), and set a 4-digit passcode.
Setting a passcode turns on data protection, using your passcode as a key to encrypt Mail
messages and attachments stored on iPhone, using 256-bit AES encryption. (Other apps may
also use data protection.)
Increase security. Turn o Simple Passcode and use a longer passcode. To enter a passcode that’s
a combination of numbers and letters, you use the keyboard. If you prefer to unlock iPhone using
the numeric keypad, create a passcode using numbers only.
