SIM cards are always on my list of things to look into when I’m going to spend any time in a country. Overpriced roaming charges on my American AT&T account are out-of-the-question except for the occasional first text to a landlord, etc. (I absolutely detest being gouged.) I try to keep a French and a Belgian SIM card active, but with no non-roaming EU-wide SIM (yet), I often need a new SIM card when I’m in Europe. Options vary widely from country to country, but Eastern Europe can offer some great deals. Unfortunately, those great deals are often hard to take advantage of if you don’t know the language.