2. Portable communications device
A portable communications device is a hand-held or
wearable device. For example, the walkie-talkie is a
device that is hand-held when in use, and wearable when
not in use. Portable telephones (cellular telephones) are
also carried, or worn, on a belt, or in a pocket.
Portable devices have also become usable when worn.
For example, most walkie-talkies come with a voice
operated transmit capability so that they will work
hands-free, when used with a wearable microphone.

3. PORTAB L E COMMUN ICAT ION D E VICE S
E X AMPL E S:
1-MOB IL E PHON E S
2-PORTAB L E DVD PL AY E RS
3-PORTAB L E ME D IA PL AY E RS
4-G L OBAL POSIT ION IN G SY ST E MS
5-SAT E L L IT E N AVIG AT ION SY ST E M
6-HAN D HE L D COMPUT E RS , IN CLUD IN G
PDAS
7-BLUETOOTH

5. Bluetooth is a wireless technology standard for
exchanging data over short distances (using short-
wavelength radio transmissions in the ISM band from
2400–2480 MHz) from fixed and mobile devices,
creating personal area networks (PANs) with high levels
of security. Created by telecom vendor Ericsson in
1994,[2] it was originally conceived as a wireless
alternative to RS-232 data cables. It can connect several
devices, overcoming problems of synchronization.

8. . Did you know that the iPhone's Home button, the button at the
bottom center of the phone, has more uses than just returning
you to the phone's default screen? It can also be used to control
the iPhone's phone and iPod app, search, and more with just a
few changed settings.
In iOS 7, the home button is somewhat less powerful and
flexible than in previous versions of the OS. It does basically two
things.
1-First, just as in iOS 6, holding down the Home button will
launch Siri (read below for more detail on that).
2-Second, double clicking the Home button will reveal all
., like in earlier versionsmultitasking managerrunning apps in the

10. THANK YOU 