Showing 1 - 2 of 2
Srisamorn Phoosuphanusorn, Published on 06/01/2014
» Advances in mobile telephony can be traced over successive generations from the early "0G" services to today's 4G technology.
Srisamorn Phoosuphanusorn, Published on 06/01/2014
» The pager, aka the beeper, became obsolete in Thailand many years ago.