GSM/SMS Technology

USSD codes explained

Posted on by Caroline Siñel in GSM/SMS Technology

Unstructured Supplementary Service Data (USSD) codes are codes used to communicate with the network provider or to connect to an application. Most USSD codes start with an asterisk (*) followed by a few digits, then end with a number sign (#). When the <SEND> key is pressed, the USSD code is sent  [...]

List of mobile frequency bands in the Philippines

Posted on by Caroline Siñel in GSM/SMS Technology

Do you want to know how much frequency bandwidth is allocated to each network provider? Below is a list of GSM, UMTS and LTE frequency bands allocated to Smart, Globe, Sun Cellular, Bayantel and Extelcom. This list is useful for those who want to know if their handset/device is compatible with their chosen  [...]

Explaining 3G technology and UMTS bands

Posted on by Caroline Siñel in GSM/SMS Technology

Note: This article discusses how 3G/UMTS technology works. For an updated list of frequency bands, please go to List of mobile frequency bands 3G, also known as third generation mobile telecommunication, allowed us to make video calls, watch mobile TV, connect to the internet via high-speed 3G/HSDPA. In order for 3G services to become available in the country, a telco must obtain a 3G license and must operate within the UMTS frequency band/s [...]

Explaining 2G technology and GSM bands

Posted on by Caroline Siñel in GSM/SMS Technology

Note: This article discusses how 2G/GSM technology works. For an updated list of frequency bands, please go to List of mobile frequency bands 2G is short for second-generation wireless telephone technology. 2G technologies allowed us to make voice calls, send SMS, picture messages, MMS (via GPRS), and connect to the internet via GPRS/EDGE. In order for 2G services to become available in the country, a telco must obtain a 2G license and must  [...]