UMTS A third-generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP, UMTS is a component of the International Telecommunications Union IMT-2000 standard set and compares with the CDMA 2000 standard set for networks based on the competing cdmaOne/CDMA One technology. UMTS uses W-CDMA radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators.
Bluetooth - A small very low power transmitter/receiver that allows a mobile to connect to nearby devices such as ear pieces and car loudspeakers.
EDGE (also known as Enhanced GPRS or EGPRS) is a data system used on top of GSM networks. It provides nearly three times faster speeds than the outdated GPRS system. The theoretical maximum speed is 473 kbps for 8 timeslots but it is typically limited to 135 kbps in order to conserve spectrum resources. Both phone and network must support EDGE, otherwise the phone will revert automatically to GPRS.
Prepaid involves paying upfront for a service and receiving or using that service afterwards. Purchasing a prepaid card for cell phones tops up credit onto a cell phone. This credit can then be used for phone calls, text messages, and other services.