Summary: The latest smartphone announcements from Mobile World Congress in Barcelona including the Samsung Galaxy S6 and S6 edge, Optus partners with Westfield to roll out free shopping centre wi-fi, Apple to hold launch event for Apple Watch, BenQ treVolo Electrostatic Bluetooth speakers, Telstra’s first 4GX pre-paid smartphone and, in the Tech Guide Help Desk, the apps that compromise your smartphone’s performance and the heavy-handed anti-piracy scheme.
