SIM card or Subscriber Identity Module is a portable memory chip that is inserted in cellular phones...

In terms of cellular service, there’re 2 technologies competing in the market right now They are GSM, i...

If you are in the market for a new cellular carrier and mobile phone it is important that you are an informed consumer and know the differences between the two primary cellular technologies available, CDMA and GSM technologies...

Why mobile phones sometimes become a challenge today This happen mainly due to the existence of different incompatible mobile systems worldwide, which often mark out the entire region from others...

The Thai kingdom was established in the mid-14th century as was known as Siam until 1939 It is the only Southeast Asian country that has never been colonized by a European power...

Prior to the end of the 20th century, the use of telephones were limited to the home or workplace Then technology gave us the pager, the beeper and then the cellular phones...

Most International prepaid cell phones today are classified as a GSM or Global Service for Mobil cell phone that operates on the GSM 900 and GSM 1800 frequency...

GSM stands for Global System for Mobile communication GSM cell phones come with integrated voice mail, high-speed data, fax, paging and Short Messaging Services...

Introduction Every day millions of people use cellular phones over radio links With the increasing features, the mobile phone is gradually becoming a handheld computer...