My wife's phone is an Android phone, a Sony Xperia X10. Mine is an older Sony Xperia X1.
TheLeftEyeGuy, we probably should have turned on Airplane Mode instead of turning the phones off. I don't know whether off really doesn't mean off on the XPeria 10 or (more likely) my wife's on button was tapped by accident at some point.
Mind you I don't entirely trust Airplane mode either. My phone, for example, goes into Airplane mode randomly.
Gobbledygoo, I agree: taking out the sim card is the best option, other than leaving your phone at home.
Other than provincial Small Claims Court, does anyone have any suggestions for avenues to get my money back from Rogers?