Filed under: Launches, Conventions and conferences, Google (GOOG), Yahoo! (YHOO), Next big thing, Sprint Nextel Corp (S), Verizon Communications (VZ)This week, the biggies of wireless attended the CTIA conference in Florida. As always, there were some big announcements, such as from Sprint Nextel (NYSE: S) regarding its huge mobile build-out of WiMAX. Dipanshu Sharma, the founder of V-Enable, was also there (his firm develops voice-activated wireless applications). Here are some of his takeaways:Mobile TV Verizon's (NYSE: VZ) MediaFLO handsets got a lot of attention. Last year mobile TV was dominated by companies using IP streaming for watching TV on the phone. Streaming over IP clogs carriers' networks, so this year both MedioFLO and DVB-H were showcased. It was mostly MediaFLO that stole the show for mobile TV. Verizon ...