Why Lenovo G450A-TFO Constellation Edition is not Centrino Platform? What is missing? Is it unlimited internet access?

Random wireless network card, but this kind of built-in network card can only be installed if there is a wireless signal, that is, the wireless router is used to cover the range of network signals, such as KFC, McDonald's and teahouse, and generally the wireless router is installed by itself. You can also install one at home, so you can surf the internet wirelessly in this range.

If you want to surf the Internet at the place you are talking about, you can buy an Internet card and a 3G card (mobile, China Unicom and Telecom), saying that 3G cards can be plugged into the network card and then into the computer, so you can surf the Internet anytime and anywhere (provided that the networks of these three operators cover you and don't bump into mountains).

Of course, in this case, you have to pay a fee. For example, in the past, the CDMA wireless network card had a monthly subscription of 100, but now 3G Internet access is more expensive.