So I a going to Canada in a few weeks and am wondering about data usage. Most of the time I will be in a remote area where there is not cell phone coverage, so I will be leaving my phone off. But for several days I will be in an area where it can be used. My question is, if I use the GPS widget to turn off GPS, will I still incur hefty data usage charges for things running in the background even if I don't use any apps? Or would it be best just to leave my phone off once I cross the border? I don't want Verizon to charge me for data usage when I won't be using my phone for more than just texting and calls. Thanks.