2. Contents
Introduction
Handset Architecture
Handset Operating Systems
Generations of mobile technology
Mobile handsets according to technology
3. What Is A Mobile Handset?
A mobile handset
(handset) is an electronic
device that provides
services to users, e.g.:
Managing address book
Scheduling calendar
Cellular telephony Example handsets:
Accessing Internet, email Apple iPhone, BlackBerry Storm, Palm
TreoPro
Handsets include
smartphones and PDAs
5. Handset Architecture (1)
Handsets use several hardware components:
Microprocessor
ROM
RAM
Digital signal processor
Radio module
Microphone and speaker
Hardware interfaces
LCD display
6. Handset Architecture (2)
Handsets store system data in electronically-erasable
programmable read-only memory (EEPROM)
Service providers can reprogram phones without requiring
physical access to memory chips
OS is stored in ROM (nonvolatile memory)
Most handsets also include subscriber identity
module (SIM) cards
7. SIM Cards
They include their own microprocessor and 16 KB
4 MB EEPROM
They come in two sizes
Their versatility arises from portability of
information
SIM card identifies subscriber to network
Stores personal information, address books, messages, service-
related information
8. Handset Operating Systems
Currently, handsets run several OSes:
Symbian OS
iPhone OS (an embedded version of OS X)
Windows Mobile
BlackBerry OS
Google Android Platform (based on Linux)
With the exceptions of Symbian and Android,
these OSes are proprietary [910]
Telecom carriers frequently lock down handset
firmware, OSes to prevent user modifications
16. CONCLUSION
So by this presentation we can examine that as the
technology is developing the compatibility and the
features of the mobile handsets are increasing day by
day.