I would like to recommend a piece of IM software, Feixin, produced by the mobile company. I had heard long ago that the Mobile had made an IM, but I didn't want to use it because there were too many IMs now. One day, I suddenly received a text message, saying: A friend added me as a buddy through Feixin. Then my friend sent me a text message and asked me to add him/her so that he/she could send free text messages to me directly through Feixin.
Therefore, I also downloaded this IM software and added some friends as buddies (directly adding their phone numbers). Thus I could receive and send text messages directly through Feixin when surfing the Internet.