There is a service that lets you have Free Calls, Chat and Text Messages for Nokia S60 phones called NimBuzz. Nokia users need to download the application before one gets to use iits many capabilities. Which are that NimBuzz is an all in one software for VOIP, conference, IM, chat and file sharing across multiple IM. Nimbuzz also offers a widget for social networks. You can place this widget on your profile page, website or blog. Nimbuzz currently supports Skype, Google Talk, MSN, AOL, Yahoo Messenger, Facebook, Orkut and Myspace. The particularly useful VOIP application works on Nokia S60 devices over a 3G or Wi-Fi network.
The Nimbuzz software and the Nimbuzz IM and Text Message Service are completely free. PC calls from Nimbuzz are also free. Mobile calls from Nimbuzz, however, are charged at local fixed line calling rates.
Download NimBuzz for Nokia Phones here