Internet connection with Nokia CDMA phones

There are many ways to make internet connection, one is using the phone as a modem. To connect with my mobile phone most flexible because we can connect the internet anywhere, like at home, office, street, or in the shops. Simply connect the phone with the laptop, dial, directly online. To connect with the phone is quite a lot of alternatives that can be used, except from the phone itself that there are many brands and serial, is also the number of cards gsm cdma or that we can use.