Zebra PS20 Product Reference Guide

Application Deployment
133
NOTE: For more information, see Knowledge Articles - Best Practices in Mobile Computing: Flash at
zebra.com/ps20-info
.
Random Access Memory
Executing programs use RAM to store data. Data stored in RAM is lost upon a reset. The operating system
manages how applications use RAM. It only allows applications and component processes and services to
use RAM when required. It may cache recently used processes in RAM, so they restart more quickly when
opened again, but it will erase the cache if it needs the RAM for new activities.
The screen displays the amount of used and free RAM.
• Performance - Indicates memory performance.
• Total memory - Indicates the total amount of RAM available.
• Average used (%) - Indicates the average amount of memory (as a percentage) used during the period
of time selected (default - 3 hours).
• Free - Indicates the total amount of unused RAM.
• Memory used by apps - Touch to view RAM usage by individual apps.
Viewing Memory
1. Go to Settings.
2. Touch System > Advanced > Developer options > Memory.
Internal Storage
The device has internal storage. The internal storage content can be viewed and files copied to and from
when the device is connected to a host computer. Some applications are designed to be stored on the
internal storage rather than in internal memory.
Viewing Internal Storage
1. Go to Settings.
2. Touch Storage.
External Storage
The device can have a removable microSD card. The microSD card content can be viewed and files
copied to and from when the device is connected to a host computer.
Viewing External Storage
1. Go to Settings.
2. Touch Storage.
Portable storage displays the total amount of space on the installed microSD card and the amount used.
To unmount the microSD card, touch .
Touch SD card to view the contents of the card.
MC18 Product Reference Guide.book Page 133 Tuesday, June 30, 2020 9:07 PM

Zebra PS20 Specifications

General

Operating system version	11
Operating system installed	Android
Operating system upgradeable	Yes
Number of cores	8
Processor model	660
Processor family	Snapdragon
Processor frequency	2.2 GHz
Processor manufacturer	Qualcomm
RFID reader	-
Scanner type	1D/2D
Certification	WFA
Product color	Light grey
Phone function	No
Display diagonal	4 \
Display resolution	- pixels
Speakers	Mono
Number of microphones	1
Flash memory	16 GB
Internal memory	4 GB
Battery capacity	3500 mAh
Storage temperature (T-T)	-20 - 70 °C
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	5 - 95 %
Electrostatic Discharge (ESD) protection (air)	15 kV
Electrostatic Discharge (ESD) protection (contact)	8 kV
Data network	Not supported
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	40-bit WEP, 104-bit WEP, EAP-GTC, EAP-TLS, EAP-TTLS, LEAP, MSCHAPv2, PEAP, TKIP, WPA, WPA-Enterprise, WPA2, WPA2-Enterprise
Quantity per pack	10 pc(s)
Harmonized System (HS) code	84713000

Weight and Dimensions

Depth	218 mm
Width	78.6 mm
Height	75 mm
Weight	290 g