3G

3G is Third Generation mobile cellular technology in the context of cellphone standards. The services associated with 3G provide the ability to transfer simultaneously both voice data (a telephone call) and non-voice data (such as downloading information, exchanging email, and instant messaging). For example; 3G enables customers to access the Internet at high data speeds, make video calls and watch Mobile TV.

HSDPA

HSDPA is High-Speed Downlink Packet Access - a 3G mobile telephony protocol, which offers increased data transfer speeds.