We have some good news and some bad news about the text tones in iOS4.2. Here it goes…
The good news is this: You can change the text tones in iOS4.2. So different people on your call list can be assigned different sounds. It's about time Apple's smartphone can do something like that. We were beginning to think they would never add this feature.
Ready for the bad news?
The Bad News: The tones aren't custom. That's right, you can't customize the tone you hear when you receive a text message. That's not very forward thinking. You must choose from the list of pre-made tones from your iPhone. So while you can assign different sounds to different people, you are stuck with the boring stock tones from Apple.
Sorry. Maybe next update?