Zebra TC21 Product Reference Guide

Application Deployment
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8.
On the host computer, open a command prompt window and type:
adbdevices.
The following displays:
Listofdevicesattached
XXXXXXXXXXXXXXXdevice
(where XXXXXXXXXXXXXXX is the device number).
NOTE: If device number does not appear, ensure that ADB drivers are installed properly.
9. Type:
adbrebootrecovery
10. Press Enter. The System Recovery screen appears.
11. Press the Volume Up and Volume Down buttons to navigate to apply from adb.
12. Press the Power button.
13. Press the Volume Up and Volume Down buttons to navigate to Full OTA Package.
14. Press the Power button.
15. On the host computer command prompt window type:
adbsideload<file>
where: <file> = the path and filename of the zip file.
16. Press Enter. The Enterprise Reset package installs and then the Recovery screen appears.
17. Press the Power button to reboot the device.
Performing a Factory Reset
A Factory Reset erases all data in the /data and /enterprise partitions in internal storage and clears all
device settings. A Factory Reset returns the device to the last installed operating system image. To revert
to a previous operating system version, re-install that operating system image. See Performing a System
Update for more information.
Downloading the Factory Reset Package
To download the Factory Reset package:
1. Go to the Zebra Support & Downloads web site, www.zebra.com/support.
2. Download the appropriate Factory Reset file to a host computer.
Performing a Factory Reset Using microSD Card
1. Copy the Factory Reset zip file to the root of the microSD card.
• Copy the zip file to a microSD card using a host computer (see USB Communication for more
information) and then installing the microSD card into the device (see Replacing the microSD Card
for more information).
• Connect the device with a microSD card already installed to the host computer and copy zip file to
the microSD card. See USB Communication for more information. Disconnect the device from the
host computer.
2. Press and hold the Power button until the menu appears.

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