www.WirelessFederation.com/news: PLDT’s mobile arm Smart Communications has reportedly introduced a new promotion offering ‘unlimited’ on-net mobile calls through its ‘Smarttalk’ plan. Sources revealed that the subscribers will be charged a new promotion offering ‘unlimited’ on-net mobile calls through its ‘Smarttalk’ plan. The offer is open for Smart and Piltel’s ‘Talk ‘N Txt’ subscribers whether their subscription is on a post-paid or pre-paid account.