Perhaps some people have used SKYPE IP phone, but it has not been widely spread in China at present. Actually, there are a lot of users abroad. Relatively speaking, the cost of IP phone is much cheaper than that of mobile phone, without so-called roaming charge. Moreover, it can call any country or region in the world, no matter mobile phone or landline telephone, with equally cheap cost. Of course, IP phone currently needs to be used with the help of computer. Perhaps many people conduct voice chat via earphones and microphones, which is not as convenient as using mobile phones. But now there are also peripheral devices like mobile phones. It is just equivalent to make network phone calls with a mobile phone in hand. Multi-function hands-free video IP phone is one of this kind. It is more powerful, with camera, electronic clock, calendar and thermometer, etc.. You can use it via IP phone software. This product is priced at 72 US dollars abroad.