A cell phone is nothing but a radio, but very high-tech. It is basically like a CB radio or walkie-talkie. But CB radio or walkie-talkie is a simplex system, where at a time a person can talk or listen. But a cell phone is a duplex device, where a person can listen and talk at [...]
Commonly used to customize the sound of a cell phone’s incoming call, ringtones were first invented to help individuals determine if their phone was ringing when in the company of other cellular phone customers. In their earliest years, all cell phones featured one cookie-cutter ringtone, which often made it difficult to distinguish one phone from [...]
Phone calling cards are a form of pre-paid phone service. No matter what kind of phone card it is, the user has paid for a certain number of minutes of phone service. This phone service may be domestic or international. It may be cellular based or land-line based. Once the number of minutes on the [...]
Within seconds, one can pass on vital information, send invitation, conduct business and make an appointment miles and miles away either by speech or text message. This is made possible by what an industry expert describes as a technological marvel-the mobile phone.
It is estimated that about 30 billion messages are exchanged worldwide each year, and [...]