What does "dual-mode" mean?

A "dual-mode" phone can utilize either a digital signal or, if necessary, an analog signal. This additional ability will keep you connected in some remote regions that do not have digital cellular capability yet.

Do cellular phones cause cancer?

Studies indicate that cell phones emit minute amounts of radiation. This normally would be largely irrelevant, except that this radiation is in such close proximity to your head. It hasn't been proven that using a cell phone can cause cancer. However, there is enough evidence that you should at least be aware of the possibility that the radiation could be harmful if you are exposed to it for long periods of time.

What does the little card in the back of a digital cell phone do?

The little card, called an SIM (subscriber identity module) card, is what allows your phone to access the global network. It contains your saved phone numbers, your phone number and your PIN number, which you must enter in order to use the phone. The card is transferable, so if you switch phones, you can simply switch the SIM card into the new phone and your phone number and other settings stay the same.

How can you send e-mail or access the Internet from a digital cell phone?

If you have a WAP-enabled phone, then you are able to access the wireless Internet. This version of the Internet is specifically designed to be easily usable on cellular phones and other portable devices. Even if your phone is not WAP-enabled, you may still be able to send e-mail. Any phone that has SMS (Short Message Service) capability is able to send short text messages to Internet e-mail addresses, provided you purchase this service from your access provider.

How do you add personal ring tones to a cell phone?

Certain models of Nokia, Ericsson, and Siemens cell phones allow the addition of personal ring tones to your phone. The easiest way to do this (if it is available on your model) is to directly "compose" a ring using your cell phone. Instructions are included with your phone if this feature is available. Otherwise, you have two options: You can buy a data cable specific to your phone and use software on a computer to compose a song and download it to your phone, or you may visit a Web site and have them send a special message that includes a ring tone to your phone (usually for a small fee).