I've been using this service for the last few days, I like the way I can use all these modern communication methods within one program.
http://www.nimbuzz.com/
Nimbuzz - Free mobile IM, texts, voice messages, file sharing and cheap international calls (free VoIP - Coming Soon)
How much does Nimbuzz cost?
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 (or deducted as part of your monthly local minutes package). This will change soon, when we release our Mobile VOIP solution – and all calls will also be free.
What do I need to start using Nimbuzz?
The first step to using Nimbuzz is to download the free software. Nimbuzz works for most Internet-enabled mobile phones and runs using Java (and soon Symbian as well). So in other words, if you can browse the Internet on your mobile, you can use Nimbuzz. To see if your phone is supported, please visit our
download section.
What type of mobile phone is required?
To use Nimbuzz, you need an Internet-enabled mobile with Internet access. To find out if your mobile is supported, please click
here. The good news is that we currently support more than 22 brands and over 500 models and we are constantly adding support for new models. If you cannot find your phone, please click
here to request a notification as soon as your phone is supported.
Nimbuzz Tips'n Tricks
Please note that you may incur wireless carrier charges for any wireless data services. If you expect to use Nimbuzz a lot, we recommend you subscribe to an unlimited wireless data plan with your wireless carrier. If you push them, or threaten to switch carriers, they will usually come up with a more attractive offer (such as a "flat rate data plan"). Then you can Nimbuzz all-day, everyday, for free (no incremental cost).