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| Samsung SGH-A777 - red (AT&T) | ||
|---|---|---|
|   | ||
| Company | Samsung | |
| Website | http://www.samsung.com | |
| Description | ||
| The Samsung SGH-A777 is a decent 3G slider phone, but there's not much to distinguish it from comparable devices. | ||
| Specifications | ||
| WCDMA (UMTS) / GSM 850/900/1800/1900, Up to 180 min, With digital camera / digital player, 3.4 oz | ||
| Introduction to Cellular and GSM communications | ||
| Cellular is one of the fastest growing and most demanding telecommunications applications. Today, it represents a continuously 
        increasing percentage of all new telephone subscriptions around the world. Currently there are more than 45 million cellular 
        subscribers worldwide, and nearly 50 percent of those subscribers are located in the United States. It is forecasted that 
        cellular systems using a digital technology will become the universal method of telecommunications. By the year 2005, 
        forecasters predict that there will be more than 100 million cellular subscribers worldwide. More » | ||
| GSM/GPRS modems and modules | ||
| A GSM modem is a wireless modem that works with a GSM wireless network. A wireless modem behaves like a dial-up modem. The 
        main difference between them is that a dial-up modem sends and receives data through a fixed telephone line while a wireless 
        modem sends and receives data through radio waves. A GSM modem can be an external device or a PC Card / PCMCIA Card. 
        Typically, an external GSM modem is connected to a computer through a serial cable or a USB cable. A GSM modem in the form 
        of a PC Card / PCMCIA Card is designed for use with a laptop computer. It should be inserted into one of the PC Card / PCMCIA 
        Card slots of a laptop computer. Like a GSM mobile phone, a GSM modem requires a SIM card from a wireless carrier in order to 
        operate. More » | ||
| Mobile Phones | ||
| Cellular phone customers clearly have many different service choices that they did not have several years ago. Furthermore, it 
        is inevitable that as the technology evolves, the quality of service will increase and the equipment cost will decrease. Older 
        technologies will become cheaper as newer technologies are introduced to the global market. More » | ||
| Short Message Service (SMS) | ||
| The Short Message Service (SMS) allows text messages to be sent and received to and from mobile telephones. The text can 
        comprise words or numbers or an alphanumeric combination. SMS was created as part of the GSM Phase 1 standard. The first short 
        message is believed to have been sent in December 1992 from a PC to a mobile phone on the Vodafone GSM network in the UK. Each 
        short message is up to 160 characters in length when Latin alphabets are used, and 70 characters in length when non-Latin 
        alphabets such as Arabic and Chinese are used. More » | ||
| Multimedia Messaging Service (MMS) | ||
| Multimedia Messaging Service (MMS) is also called media messaging and picture messaging. The range of names are matched only 
        by the range of possibilities that mms gives the user. It is now possible to send photos, sound and animations to other mobile 
        users. no longer will you have to use a :-) face to show your happiness. You can simply take a picture and send it to a friend 
        with a compatible mobile. More » | ||
| SMS and MMS Providers | ||
| SMS messages are transferred between mobile phones via a Short Message Service Center. The SMSC is software that resides in 
        the operators network and manages the processes including queuing the messages, billing the sender and returning receipts if 
        necessary.
        An MMS message can contain any combination of graphics, photographic imagery and audio. Multimedia Messaging Service (MMS) is 
        an end-to-end solution enabling operators to deliver a rich MMS experience to customers. More » | ||
| General Packet Radio Service (GPRS) | ||
| General Packet Radio Service (GPRS) enabled networks offer 'always-on', high capacity, internet-based content and packet-based 
        data services. By being 'always-on', users do not need to dial up for internet access like they do when using wap. This 
        enables services such as colour internet browsing, e-mail on the move, powerful visual communications, multimedia messages 
        and location-based services all through the handset. Although not as powerful as 3g, gprs offers a cost effective alternative 
        that can transform the world of communication. More » | ||
| Bluetooth | ||
| Bluetooth wireless technology revolutionizes the communication market by providing freedom from wired connections, in effect 
        creating a world without wires. This technology enables users to link between computers, mobile phones, portable handheld 
        devices, and provide connectivity to the internet. More » | ||
| Java | ||
| Java is a computer language and software platform (like windows, for example). the benefit of java applications is can be 
        created on one device but used on a variety of others such as computers, television and mobile phones. With classic arcade and 
        latest title games now available for java enabled phones, mobile phones have been transformed in to much more than a 
        communication device. More » | ||
| Mobile Communications Software | ||
| There are many mobile communication software packages available today. We collected the best software and grouped them in 
        different cateogries More » | ||