Goal is a good switch-the-SIM unlocked GSM smartphone for use in the U.S. (T-Mobile, but, should also work on AT&T if necessary), Australia, and, for good measure (this part is wishful thinking right now), Europe. Easily switchable SIM, replaceable battery, easily removable microSD, all required. International functionality should be a good usable browser on 3G, but, tons of other apps are not necessary. Expect to use with prepaid SIMs internationally with modest 3G use. Good (fast, real) GPS a must. Good, usable GPS navigation apps a plus. Good camera with geotagging. Mid-price, mid-size. Flamboyant design basically a negative; innocuous looking is just fine. Looked at Nokia 808, but, frightened off by complaints about 3G/HSDPA/HSPA+ stability issues.