iphone 4s. need email and text - and the once in a while phone call. am torn between
a) wifi for email; skype for text? (ugh). not sure of skype phone rates.
b) unlocking the phone and buying a sim card in london. we're there for 10 days - i get a lot of emails. so 1) how much data do you think i would need? and b) is there a place that anyone knows where i can buy it near my hotel (since i hear that buying it at the airport is highway robbery). hilton metropole hotel.