Oregano is a plant. The leaf is used to make medicine. Oregano is used for respiratory tract disorders such as coughs, asthma, croup, and bronchitis. It is also used for gastrointestinal (GI) disorders such as heartburn and bloating.
Dual-Band Cellular/PCS and single-band PCS equipment is compatible with traditional T-Mobile GSM/EDGE service. Other carriers 3G service (AT&T, Verizon Wireless, Sprint PCS, etc) operate on the standard cellular/PCS frequency bands and can use normal dual-band equipment. More information on T-Mobile 3G frequency.
The most popular options are Tri-Band GSM devices (900/1800/1900Mhz frequencies) and Quad-Band GSM devices (850/900/1800/1900Mhz frequencies). In terms of CDMA the main frequencies of importance are the 850/1900Mhz frequencies which you'll find in use at Verizon, Sprint, Alltel, etc.