What is 3G?
Definition: 3G is the third generation of mobile phone standards and technology. 3G technologies enabled faster data-transmission speeds, greater network capacity and more advanced network services. And it is intended for multimedia smartphones and features increased bandwidth and transfer rates to accommodate Web-based applications and phone-based audio and video files.
3G Wireless Combines a mobile phone, laptop & tablet PC and TV.
- Phone calls/fax
- Global roaming
- Send/receive large email messages
- High-speed Web
- TV streaming
- Electronic agenda meeting reminder.
3G comprises several cellular access technologies. The three most common ones are:
- CDMA2000 – based on 2G Code Division Multiple Access (see Cellular Access Technologies)
- WCDMA (UMTS) – Wideband Code Division Multiple Access
- TD-SCDMA – Time-division Synchronous Code-division Multiple Access
The UMTS system, standardized by 3GPP, is usually used in Europe, Japan, China (however with a different radio interface) and other regions predominated by GSM 2G system infrastructure. The UMTS Forum has confirmed that WCDMA is the world’s most popular 3G technology. Outside of Europe, the system is also known by other names such as FOMA or W-CDMA. In marketing, it is often referred to as 3G or 3G+.
The TD-SCDMA radio interface was commercialized in 2009 and is only offered in China.
The CDMA2000 system, standardized by 3GPP2, used especially in North America and South Korea, sharing infrastructure with the IS-95 2G standard. The cell phones are typically CDMA2000 and IS-95 hybrids.
So basically 3G is dependent on two things; what frequencies the phone has built in that it can see and what frequency the phone company you want to use is projecting their 3G network on. Here you can check what kinds of operating frequency bands (including 2G and 3G networking) is required in your country: http://www.gsmarena.com/network-bands.php3