User Guide

Status Icons
The icons in the status bar at the top of the screen give information about iPhone:
Status icon What it means
Cell signal* Shows whether you’re in range of the cellular network
and can make and receive calls. The more bars, the
stronger the signal. If there’s no signal, the bars are
replaced with “No service.”
Airplane mode Shows that airplane mode is on—you cannot use the
phone, access the Internet, or use Bluetooth® devices.
Non-wireless features are available. See “Airplane
Mode
” on page 193.
UMTS/EV-DO Shows that your carrier’s 3G UMTS (GSM) or EV-DO
(CDMA) network is available, and iPhone can connect
to the Internet over that network. See “How iPhone
Connects to the Internet
” on page 22.
EDGE Shows that your carrier’s EDGE network is available
(GSM models), and iPhone can connect to the Internet
over that network. See “How iPhone Connects to the
Internet
” on page 22.
GPRS/1xRTT Shows that your carrier’s GPRS (GSM) or 1xRTT (CDMA)
network is available, and iPhone can connect to the
Internet over that network. See “How iPhone Connects
to the Internet
” on page 22.
Wi-Fi* Shows that iPhone is connected to the Internet over
a Wi-Fi network. The more bars, the stronger the
connection. See “Joining a Wi-Fi Network
” on page 23.
Network activity Shows over-the-air syncing or other network activity.
Some third-party apps may also use the icon to show
an active process.
Call Forwarding Shows that Call Forwarding is set up on iPhone (GSM
models). See “Call Forwarding
” on page 212 .
VPN Shows that you’re connected to a network using VPN.
See “Network
” on page 199.
Lock Shows that iPhone is locked. See “On/O Sleep/Wake
Button
” on page 11 .
TTY Shows that iPhone is set to work with a TTY machine.
See “Using iPhone with a Teletype (TTY) Machine
” on
page 213 .
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Chapter 1 iPhone at a Glance