Glossary
Mobile Glossary
3G (Third Generation)
Third-generation mobile network technology that enabled mobile voice
and data services at faster speeds than earlier (2G) networks. Many
carriers worldwide have retired or are in the process of retiring 3G
networks as newer technologies (4G and 5G) have become standard.
4G (Fourth Generation)
Fourth-generation mobile network technology delivering significantly
faster data speeds and improved network efficiency compared to 3G. 4G
commonly refers to LTE (Long Term Evolution) and LTE-Advanced
technologies. Actual speeds vary based on device capability, network
configuration, and coverage conditions.
5G (Fifth Generation)
The latest generation of mobile network technology, designed to
provide faster speeds, lower latency, and greater network capacity
compared to 4G. Performance varies by location, spectrum availability,
device compatibility, and network deployment.
Android
A mobile operating system developed by Google. Android is based on
open-source software and is used by many device manufacturers. Device
features, update availability, and customization vary by manufacturer
and carrier.
Application (App)
Software designed to run on a mobile device operating system such as
Android or iOS. Apps may be pre-installed or downloaded from official
app marketplaces. Features, pricing, data usage, and privacy practices
vary by developer.
API (Application Programming Interface)
A set of rules and protocols that allows software applications to
communicate with one another or with operating systems and hardware
components.
Apple
A technology company headquartered in Cupertino, California that
designs consumer electronics, software, and services, including the
iPhone and iOS operating system. Apple Inc.
Bluetooth
A short-range wireless technology standard used to exchange data
between devices such as smartphones, headphones, wearables, and
computers.
Calling Plan (Mobile Plan)
A service plan offered by a mobile network operator that outlines
pricing, included services (such as voice, messaging, and data), usage
limits, roaming terms, and other conditions. Terms and availability vary
by provider and region.
Capacitive Touchscreen
A touchscreen that detects input through the electrical properties of
the human body. Most modern smartphones and tablets use capacitive
touchscreens.
Carrier / Mobile Network Operator (MNO)
A company that owns or operates wireless network infrastructure and
provides mobile voice and/or data services to customers under service
agreements.
CDMA (Code Division Multiple Access)
A legacy wireless communication standard historically used by some
mobile carriers. CDMA networks have largely been retired or replaced by
LTE and 5G technologies in many regions.
Digital
Technology that represents information using binary code (0s and
1s).
Download / Downlink
The transmission of data from a remote system or network to a user’s
device.
EDGE (Enhanced Data Rates for GSM Evolution)
A legacy data technology used to improve speeds on GSM networks. EDGE
has largely been replaced by newer mobile data standards.
eSIM (Embedded SIM)
A digital SIM that allows a mobile device to activate a cellular plan
without using a physical SIM card. Availability depends on device and
carrier support.
Feature Phone
A mobile phone that offers basic calling and messaging functionality
and may include limited data or app capabilities, but does not operate
as a full smartphone.
Form Factor
The physical design and shape of a device (e.g., bar, flip,
foldable).
Geo-Tagging
The process of adding geographic location data (such as latitude and
longitude) to digital content like photos or posts.
GPS (Global Positioning System)
A satellite-based navigation system owned by the United States
government that provides location and time information. Modern devices
may also use additional global navigation systems (GNSS) to improve
accuracy.
GSM (Global System for Mobile Communications)
A widely adopted mobile communication standard historically
associated with SIM-based networks. Modern GSM networks have largely
transitioned to LTE and 5G technologies.
iOS
A mobile operating system developed by Apple Inc. for use on Apple
devices such as the iPhone. iOS is proprietary and licensed only for
Apple hardware.
ITU (International Telecommunication Union)
A specialized agency of the United Nations responsible for issues
related to information and communication technologies. International
Telecommunication Union
Location-Based Services (LBS)
Services that use geographic data from a device to provide relevant
information or functionality. Use of LBS may be subject to user consent,
device settings, and applicable privacy laws.
LTE (Long Term Evolution)
A 4G wireless broadband technology designed to provide high-speed
mobile data communication.
MMS (Multimedia Messaging Service)
A messaging standard that allows sending multimedia content such as
images, audio, and video over mobile networks. Size limits and
compatibility vary by carrier and device.
Mobile Commerce (mCommerce)
The purchase or sale of goods and services using a mobile device.
Mobile Marketing
Marketing activities conducted through mobile devices, including SMS,
MMS, mobile apps, and mobile web experiences. Such activities may be
subject to applicable advertising, consumer protection, and data privacy
regulations.
NFC (Near Field Communication)
A short-range wireless technology that enables secure data exchange
between compatible devices placed in close proximity. Commonly used for
contactless payments and access control.
Operating System (OS)
Core software that manages hardware and software resources on a
device and allows applications to run.
Postpaid Plan
A billing arrangement in which customers are billed after services
are used, typically on a monthly basis.
Prepaid Plan
A service arrangement in which customers pay in advance for mobile
services. Service is typically limited to the prepaid balance.
Push Notifications
Messages sent from an application server to a device without an
active request from the user. Delivery and appearance depend on device
settings and user permissions.
QR Code (Quick Response Code)
A two-dimensional barcode that can be scanned by a compatible device
to access information or perform an action.
RCS (Rich Communication Services)
An advanced messaging protocol designed to enhance traditional SMS
with features such as read receipts, typing indicators, and media
sharing. Availability depends on device, carrier, and messaging app
support.
Responsive Web Design
A web design approach that enables websites to adapt their layout and
content to different screen sizes and device types.
RFID (Radio Frequency Identification)
A technology that uses radio waves to identify and track tagged
objects.
Short Code
A shortened phone number (typically 5–6 digits in some countries)
used for messaging services such as alerts, promotions, or voting
campaigns. Availability and regulations vary by country.
SIM (Subscriber Identity Module)
A removable or embedded chip that securely identifies a subscriber on
a mobile network.
Smartphone
A mobile device that combines cellular connectivity with advanced
computing capabilities, including internet access, applications, and
multimedia functions.
SMS (Short Message Service)
A standardized messaging protocol that allows devices to exchange
short text messages. Message length and formatting standards vary by
encoding and network.
Tablet
A portable computing device larger than a smartphone and primarily
operated via touchscreen.
Wi-Fi
A wireless networking technology that enables devices to connect to
the internet or local networks without using cellular connectivity.
WAP (Wireless Application Protocol)
An early standard for accessing internet content on mobile devices.
WAP has largely been replaced by modern mobile web technologies.