There are many more than two types of cell phones used worldwide.
I believe the iPhones
Nokia and samsung
computers and cell phones
There are many phones that may be thought of as the most popular cell phones. These devices are used by many people throughout the world, and they are often made popular by catchy advertising slogans and frequent television commercials. The features of these electronics make them quite popular in the world of cell phones.
3G refers to the 3G cell phone network and several types of cell phones. "3g4free" is a brand of ringtones available for download and use on these phones.
Rugged cell phones are cell phones that are durable and can withstand accidents such as being dropped and handled roughly better than most normal cell phones can.
No body used cell phones in old days. Cell phones arrived in mid 1980's but was heavy and bulky and was very expensive. Few people used it as it was too big to carry around. When technology and the size improved and prices dropped in the 1990's it became very useful and popular item.
Yes! There are many different organizations around the world that pay you to recycle your old or unused cell phones. Recycling used cell phones is much better on the enviorement then sending them into landfills.
Do you mean 'When were the first cell phones sold?' If so, the answer is in the mid 1980s.
Pay Phones
They are used for stuff.
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