What is the basic difference between mobile phones having GSM, CDMA, 3G technologies. can one mobile have all?
In cellular service there are two main competing network technologies: Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA). GSM and CDMA will allow you to choose a carrier that uses the preferable network technology for your needs. And 3G is the third generation of tele standards and technology for mobile networking, It is based on the International Telecommunication Union (ITU) family of standards under the IMT-2000. Yes now a days the chineese mobiles can provide you all these services..