1. Training on
Mobile handset
technologies
By Abir Muhtadi

2. Mobile Handsets
 Can make and receive telephone calls
wirelessly.
 Kinds – ULC (Bar), Feature (Bar), Smartphone
(Android/Windows).
 1.8 billion mobile cellphones.

5. Anatomy of Mobile Handsets

6. Anatomy of Mobile Handsets
 Mobile handsets are like Human bodies –
have Brain (Processor), Eyes (Camera),
Hands (RAM), Storage (ROM/Expandable
Memory), Energy (Battery).
 Parts –
Processor ROM RAM
Chipset Display Battery

7. Chipsets
 ICs that manage the data flow between the
processor, memory and peripherals.
 allows handset's components, including components
on the motherboard, to communicate with each
other.
 For smartphones - MTK (6592 x 8, 6582 x 4, 6572 x 2),
Spectra (7731 x 4, 7715 x 1), Qualcomm (many).
 For Feature and Bar - 6261 A (128 + 64 Mb, Edge +
Java), 6261 D (32+32 Mb, GPRS), 6261 M (24+32 Mb)
from MTK.
 6531 C (Java, no edge), 6531 D (32+32, GPRS), 6531
DA (32+32, GPRS) from Spectra.

8. Processor
 Processor is the ‘brain’ of the smartphone.
 Capable of executing a program. Interprets
the information from the hardware, makes the
appropriate services available to other parts of
the system.
 Higher core, better. ARM, Intel, AMD are few
manufacturer companies.

11. Display
 Resistive and Capacitive – human skin sensitive ones
are Capacitive with better sensitivity.
 TFT – thin-film transistor. transistor is located next to
each pixel, allowing it to be turned on and off
individually. Ensures faster response time and greater
contrast.
 IPS (in plane switching) - has a functionality of firm
and visibility from all angles.
 AMOLED - AMOLED deals in better brightness and
power saving.
 Full lamination – all black.
 OGS = one glass solution (display +touchpad+ glass
protection).

12. Display (continued.)
Based on Resolution – USUALLY –
 FHD (full high-definition) – 1920 x 1200 – 5’’
and above.
 HD – 720 x 1200 – 4.5’’ – 5.5’’
 qHD – 540 x 960 – 4.5’’ – 5.5’’
 FWVGA – 480 x 854 – 4’’ – 5.5’’
 WVGA – 480 x 800 – 3.5’’ – 4’’
 HVGA – 320 x 480 – 3.5’’

13. Camera
 Mega pixels define the camera quality.
 Camera of handsets has resolution as well.
Such as, Micromax Canvas Hue – primary has 8
MP with 3264 x 2448 pixels.
Based on Sensors, the quality varies as well.
Different Sensors – Sony (Expensive),
OV(medium), OA sensors.
Manual focusing and Auto focusing.

14. RAM & ROM
 RAM – Random Access Memory - Processing
memory for processor – does multi-tasking
with higher RAM.
Analogy - Man fielding and about to catch
balls – higher number of hands, higher number
of balls to be caught.
 ROM – Internal Memory – storage of stuff like
photos, songs, apps, videos. Complies with
External Storage (Expandable memory), if
plugged-in.

16. How to relate all the
components using an analogy?
 RAM is the number of hands, ROM is the
storage of balls at source end, fielding is
executed by brain or processor – does the
combination of running, seeing and catching
the balls.

17. Operating System (OS)
 Software that manages computer hardware
and software resources and provides
common services for computer programs.
 Interacts with humans (views in human
understanding on front end) and machine
part (runs the codes and executes from
backend), both by bridging the gap for
executing necessary.

19. OS (Continued)
 Android – by google (original design
manufacturer or ODM) and then bought by
companies and customized by them such as
Tizen, Cyanogen etc. As a result, that seamless
connectivity is lost.
 Apple – OS is IOS – Apple server directly
connected to OS. Works faster.