It depends on how updated the mobile phone is. Some not so updated phones can text, play some games like pac-man, bubble bash 1&2, etc, search on the web, and take 480 pixel photos.Some updated...
It's impossible. If you want someone to hear your conversation then you can record your phone convo and then send it or u can just put it on 3-way call :)
well its very simple it can be done by using your service provider but one thing you has to remember while doing this your account balance will be reduced when every call is transferred