FEATURES OF MOBILE PHONES

Features of Mobile Phones:

There are many mobile phone features found in today's mobile phones that offer users many more capabilities than only voice calls or text messaging. They are as Follows,

SIM CARD:
SIM or Subscriber Identity Module is a portable memory chip used in some models of cellular telephones. The SIM card makes it easy to switch to a new phone by simply sliding the SIM out of the old phone and into the new one. The SIM holds personal identity information, cell phone number, phone book, text messages and other data. It can be thought of as a mini hard disk that automatically activates the phone into which it is inserted. Without a SIM card most mobiles can only call the emergency services in the part of the world you're in. None of the other functions will work. SIM card provides a bigger advantage for international travelers by taking your phone with you and buy a local SIM card with minutes. For example, a traveler from the U.S. staying in the U.K. can purchase a SIM card across the pond. Now the phone can be used to call throughout England without paying international roaming charges.

SMS Services:
Mobile phones do not only support voice calls, they can also send and receive data by sending short messages. Short Message Service (SMS) is a communications protocol allowing the interchange of short text messages between mobile telephone devices. The service allows for short text messages to be sent from one cell phone to another cell phone or from the Web to another cell phone. SMS text messaging is the most widely used data application on the planet, with 2.4 billion active users. Including spaces, text messages can’t exceed 160 characters.

WAP Services:
WAP stands for Wireless Application Protocol, and is more commonly referred to as "Mobile Internet". Most of today's mobile phones, smartphones and PDAs come with a built in WAP browser. With a WAP browser, you can access dedicated WAP pages while on the move. A WAP browser provides all of the basic services of a computer based web browser but simplified to operate within the restrictions of a mobile phone, such as its smaller view screen.

General Packet Radio System(GPRS):
General Packet Radio Service (GPRS) is a packet oriented Mobile Data Service available to users of the 2G cellular communication systems Global System for Mobile Communications(GSM). The GPRS network is an “always on”, private network for data. It uses the GSM network to transmit and receive TCP/IP based data to and from GPRS mobile devices. GPRS is a best-effort packet switched service, as opposed to circuit switching.

Camera Phones:
There is no doubt that the worldwide boom in camera mobile phone is increasing. Camera Phones are mobile phones that are equipped with a camera. A camera phone is a mobile phone which is able to capture either still photographs or motion video. The CMOS active pixel image sensor "camera-on-a-chip" developed by Dr. Eric Fossum and his team in the early 1990s achieved the first step of realizing the modern camera phone, While the first camera phones, as successfully marketed by J-Phone in Japan, used CCD sensors and not CMOS sensors.

MMS Services:
Multimedia Messaging Service (MMS) is an upgraded version of the SMS (Short Messaging Service) through which you can send and receive multimedia messages such as texts, pictures, video clips, audio clips, etc., with any other compatible cell phone. MMS messages are delivered in a fashion almost identical to SMS, but any multimedia content is first encoded and inserted into a text message in a fashion similar to sending a MIME e-mail. It's an advanced messaging service that lets users send multiple media in one single message to one or more recipients.

BLUETOOTH:
Bluetooth is a wireless protocol for exchanging data over short distances from fixed and mobile devices. Bluetooth technology allows electronic devices to communicate wirelessly. It can connect several devices, overcoming problems of synchronization. Bluetooth has a range of up to 30 ft. or greater, depending on the Bluetooth Core Specification Version. Newer devices, using newer versions of Bluetooth, have ranges over 100 ft. Bluetooth technology was first developed by Ericsson and then formalized by a group of electronics manufacturers (Ericsson, IBM, Intel, Nokia, and Toshiba) who joined forces to form a private trade association known as the Bluetooth Special Interest Group (SIG)Memory Card:
A memory card (sometimes called a flash memory card or a storage card) is a small storage medium used to store data such as text, pictures, audio, and video. They offer high re-record-ability, power-free storage, small form factor, and rugged environmental specifications. There are also non-solid-state memory cards that do not use flash memory, and there are different types of flash memory. There are many different types of memory cards and jobs they are used for. Some common places include in digital cameras, game consoles, cell phones and industrial applications.