With the development of modern science and technology, the functions of cellphones have changed greatly.    The only difference may be that they fit in your pocket and you pay by the minute to use them. Some of the things a cellphone can do for you will be available this year:
Surf at speed
Cellphones that let you use the Web have been around for years. So, what's new? Well ,  faster third-generation (3G)  networks that let you surf at anywhere. Possible choices are from IJG Electronics VX 8000 and Motorola V1150.Listen as you go.
  There is no doubt that it is about to change. Sony Ericsson’s new W8001 can hold around 150 songs in its 500 MB memory. And Samsung's SPH-V5400 even comes with a l. 5 GB hard drive. Mobile phones may eventually replace miniMP3 players, especially for teens. Say cheese.
Camera cellphones are not new either but most of them have limitations: around l- megapixel  (百万像素 ) .  However new technology has made 2-megapixel units more common ,and 3-megapixel units are showing up soon. Some 2-megapixel models, like Sony Ericsson's K7501, offer limited zoom and focus controls.  Portable TV.
You say you like "watching TV"? That’s what Samsung MMA700 wants to give you. The new model lets users watch popular TV programmes~ for a fee. Other choices are Nokia's 6620, Sanyo's MM740 and NEC's N940. 
The above are just a handful of what you ' ll see in the coming months.  Further down the road, your mobile phone may play a host of other roles, such as mobile credit card, position locator and so on. So what is there that a cellphone can't do?

A．The NEC model lets you watch public TV - no fee.

B．Without a cellphone, you can do nothing in your daily life.

C．Nowadays, new cellphones are much cheaper than old ones.

D．Today's do-it-all mobiles have a lot in common with the computer.

E. This then allows a carrier to send video, music, and games to your phone.
F. Others, like LG's recent A7110, can even capture 30 minutes of full-motion video.
G. The problem with most cellphone MP3 players is that they hold only a handful of songs.