I am a Canadian travelling down to Florida this month and with my normal plan I have unlimited texting in both Canada and the USA. To avoid data charges, I was told to turn off 3G. However, when I do that, I am left with one bar or "No Service" (which are pretty much the same) and am unable to send texts (haven't tried phone calls but am expecting the same result). Any suggestions? I've tried rebooting and everything.