T-Mobile Sidekicks lose data, with lessons for phone carriers and users “Phones need to make it relatively easy to back up the data they carry, preferably locally to your computer, and cell phone owners should take advantage of those methods. Those are among the lessons of the past weekend’s T-Mobile sidekick incident, in which Microsoft irreparably wiped out the contacts, call history, and other data for an specified number of Sidekick owners” [Consumer Reports Electronics]