Microsoft’s approach to the mobile device market is a lot like the “Survivor” credo. On the popular reality TV show, contestants are advised to “outwit,” “outplay,” and “outlast” their opponents. Microsoft is aiming to do all three, though it may well succeed if it only manages the last of those tasks. The software maker is expected to introduce Windows Mobile 5, the next version of its operating system for cell phones and handhelds. The OS, code-named Magneto, is the latest in a string of software releases that highlight Microsoft’s attempts to take on rivals including PalmSource and Nokia.