I recently went to the UK with the TravelPass plan. Although I didn't use my phone every day for calls or data (GPS was set to wifi only) I notice that I was charged for use every day I was there. I did not use airplane mode because I wanted to be able to receive any possible emergency calls from home. Studying my usage, I see that very small amounts of data usage were recorded several times every day, regardless of whether I used my phone or not, I assume as a result of my phone establishing connection with the cell towers (?). So, is the reason my bill showed every day use because of these connections? If so, that was not mentioned in the plan details, and would be completely unfair.