Zebra TC21 Product Reference Guide

104
Calls
NOTE: This section applies to WWAN devices only.
Make a phone call from the Phone app, the Contacts app, or other apps or widgets that display contact
information.
Emergency Calling
The service provider programs one or more emergency phone numbers, such as 911 or 999, that the user
can call under any circumstances, even when the phone is locked, a SIM card is not inserted or the phone
is not activated. The service provider can program additional emergency numbers into the SIM card.
However, the SIM card must be inserted in the device in order to use the numbers stored on it. See the
service provider for additional information.
NOTE: Emergency numbers vary by country. The phone’s pre-programmed emergency number(s) may
not work in all locations, and sometimes an emergency call cannot be placed due to network,
environmental, or interference issues.
Audio Modes
The device offers three audio modes for use during phone calls.
• Handset Mode - Switch audio to the receiver at the top front of the device to use the device as a
handset. This is the default mode.
• Speaker Mode - Use the device as a speakerphone.
• Headset Mode - Connect a Bluetooth or wired headset to automatically switch audio to the headset.
Bluetooth Headset
Use a Bluetooth headset for audio communication when using an audio-enabled app. See Bluetooth on
page 97 for information on connecting a Bluetooth headset to the device. Set the volume appropriately
before putting on the headset. When a Bluetooth headset is connected, the speakerphone is muted.
Wired Headset
Use a wired headset and audio adapter for audio communication when using an audio-enabled app. Set
the volume appropriately before putting on the headset. When a wired headset is connected, the
speakerphone is muted.

Zebra TC21 Specifications

General

Display diagonal	5 \
Touch technology	Multi-touch
Touchscreen type	Capacitive
Display resolution	1280 x 720 pixels
Battery capacity	3100 mAh
Battery life (max)	10 h
Battery recharge time (off)	4 h
Flash memory	32 GB
Internal memory	3 GB
Internal memory type	-
Compatible memory cards	MicroSD (TransFlash), MicroSDHC, MicroSDXC
Maximum memory card size	128 GB
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Bluetooth version	5.0
Security algorithms	EAP-PWD, EAP-PEAP, EAP-TLS, EAP-TTLS, LEAP, MSCHAPv2, WEP, WPA, WPA-AES, WPA-TKIP, WPA2, WPA2-AES, WPA2-TKIP
Rear camera resolution (numeric)	13 MP
USB 2.0 ports quantity	1
RFID reader	No
Scanner type	1D/2D
Certification	RoHS 2011/65/EU; 2015/863 REACH SVHC 1907/2006
Product color	Black
International Protection (IP) code	IP67
Speakers	Mono
Operating system version	10
Operating system installed	Android
Number of cores	8
Processor model	660
Processor family	Snapdragon
Processor frequency	1.8 GHz
Processor manufacturer	Qualcomm
Storage temperature (T-T)	-30 - 70 °C
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	5 - 95 %
Harmonized System (HS) code	84713000

Weight and Dimensions

Depth	13.7 mm
Width	79 mm
Height	158 mm
Weight	236 g