This looks like an excellent case study for creative outlet.
Have you come up with any ideas yet?
Next 5 - 10 years is really hard to predict since innovations never though before have been witnessed in just few months.
Mobile TV has already made inroads, internet is already big on cellphones.
VAS like astrology, news, radio are prominent.
Blackberry messenger is one of a kind innovation.
Games, Business applications, GPS , app store like iphone and blackberry is something others would want to replicate.
I'm assuming free VOIP calls through internet, auto call answering, voicemail, movie on demand, multiplayer games, bluetooth / wifi innovations ( read pranav mistry's sixth sense technology ) are somethings they could keenly look into.
What else have you thought of?