On the English coast, the white cliffs would sometime mean that you were not inline with an English tower but if the weather is right you could pick up a French telephone tower.
Much to the annoyance to the local residence the telephone company would mark you as roaming and all data and calls for that day would be charged as international. I was caught out about 10 years ago, one would hope charging was more granular these days, however the roaming issue does still exist:
Much to the annoyance to the local residence the telephone company would mark you as roaming and all data and calls for that day would be charged as international. I was caught out about 10 years ago, one would hope charging was more granular these days, however the roaming issue does still exist:
http://www.bbc.co.uk/news/uk-england-kent-21739029