Live from MWC: Open systems, LTE and the mobile Web

After a day spent scurrying between press conferences and briefings, I picked up some common themes which I expect to hear more about as the Mobile World Congress progresses. Here's a rundown:

• Ericsson and Nokia Siemens Networks both touted their LTE solutions and talked about how their next-generation network technology would revolutionize the mobile Web. Telstra CEO Sol Trujillo touted his company's success in Australia where Telstra's HSPA network from Ericsson is generating $100-plus ARPUs and data usage is surging.
• Imaging handsets now have 5-megapixel cameras and music phones come equipped with FM-transistors.
• Nokia's purchase of Trolltech means a future with open operating systems that allow developers to develop applications cross-platform. I expect to hear more of this cross-platform capability from others.
• In the post-iPhone era, handset makers are working overtime on making the user interface simple and intuitive. As Nokia's Olli Pekka-Kallasvuo said during this morning's press conference, "As the technology inside the devices becomes more complex, people are demanding more simplicity."

Stay tuned to FierceWireless, FierceMobileContent and the FierceWireless:Europe for all our coverage from the Mobile World Congress. -Sue