Apple IPhone IOS 51 User Guide

Compass
27
About Compass
The built-in compass shows which direction your iPhone is pointing and the geographical 
coordinates of your current location. You can have the compass point to magnetic north or  
true north.
Important:   The accuracy of the compass can be affected by magnetic or environmental 
interference; even the magnets in the iPhone earbuds can cause a deviation. Use the digital 
compass only for basic navigation assistance and don’t rely on it to determine precise location, 
proximity,...

Finding the direction
Find the direction your iPhone is pointing:  Hold iPhone flat in your hand, level with the ground. 
Its heading appears at the top of the screen and location is displayed at the bottom.
Switch between true north  
and magnetic north Tap .
Using Compass with Maps
The Compass app can also show your current location and heading in Maps. For information, see 
“Finding locations
”
 on page 100.
See your current location in Maps:   Tap  at the bottom of the Compass screen. Maps opens and...

Voice Memos
28
About Voice Memos
Voice Memos lets you use iPhone as a portable recording device using the built-in microphone, 
iPhone or Bluetooth headset mic, or supported external microphone. Recordings using the built-
in microphone are mono, but you can record stereo using an external stereo microphone.
Note:  External microphones must be designed to work with the iPhone headset jack or Dock 
Connector. These include Apple-branded earbuds and authorized third-party accessories marked 
with the Apple...

Listening to a recording
Play a recording:  Tap , tap a memo, then tap . Tap  to pause.
Trim or relabel the 
recording. Listen to the recording.
Attach the recording to an 
email or text message.
Drag to skip to any point.
Switch between the speaker and the receiver.
Skip to any point in a recordingDrag the playhead along the scrubber bar.
Listen through the built-in iPhone 
speaker instead of the receiver Tap Speaker.
Trim a recording Tap 
 next to the recording, then tap Trim Memo. Drag the edges of...

Nike + iPod
29
About Nike + iPod
With a Nike + iPod Sensor (sold separately), the Nike + iPod app provides audible feedback 
on your speed, distance, time elapsed, and calories burned during a run or walk. You can send 
your workout information to nikeplus.com, where you can track your progress, set goals, and 
participate in challenges.
Review your
workout history.
Calibrate based on
your last workout.
Choose a workout type.
Choose a 
standard 
workout.
Choose or
create a
custom workout.
Activating Nike...

Link your sensor to iPhone:  Attach the sensor to your shoe, then go to Settings > Nike + iPod > 
Sensor.
Link to a different sensor to iPhoneGo to Settings > Nike + iPod > Sensor and tap Link New.
Working out with Nike + iPod
After activating Nike + iPod and inserting the Nike + iPod Sensor in your Nike+ ready shoe, you’re 
ready to collect workout data.
Important:   Before starting any exercise program, you should consult with a physician and have 
a complete physical examination. Do a warmup or...

iBooks
30
About iBooks
iBooks is a great way to read and buy books. Download the free iBooks app from the App Store, 
and then get everything from classics to best sellers from the built-in iBookstore. Once you 
download a book, it’s displayed on your bookshelf. 
To download the iBooks app and use the iBookstore, you need an Internet connection and an 
Apple ID. If you don’t have an Apple ID, or if you want to make purchases using another Apple ID, 
go to Settings > Store. See “Store settings
” on page...

Syncing books and PDFs
Use iTunes to sync your books and PDFs between iPhone and your computer, and to buy books 
from the iTunes Store. When iPhone is connected to your computer, the Books pane lets you 
select which items to sync. You can also add DRM-free ePub books and PDFs to your iTunes library. 
Books in PDF and ePub format are available on the web.
Sync an ePub book or PDF to iPhone:  In iTunes on your computer, choose File > Add to Library 
and select the file. Select the book or PDF in the...

Add or remove a highlightDouble-tap a word, use the grab points to adjust the selection, then tap 
Highlight and choose a color. 
To remove a highlight, tap the highlighted text, then tap 
. 
To underline words, tap . 
To change the color, tap the highlighted text, tap the current color, then 
select a new color from the menu.
Add, remove, or edit a note Double-tap a word, tap Highlight, then choose 
 from the menu that 
appears.
To view a note, tap the indicator in the margin near the highlighted text....

Changing a book’s appearance
Some books let you change the type size, font, and page color.
Change the brightness:  Tap near the center of a page to display the controls, then tap 
. If you 
don’t see , tap  first.
Change the font or type sizeTap near the center of a page to display the controls, then tap . Tap 
Fonts to select a typeface. Not all books support changing the font.
Some books allow you to change the type size only when iPhone is in 
portrait orientation.
Change the color of the page  
and...