Even though we’d figured out how to get “regular” telephone service in France before we left (see Taking our phone service with us (or not)), we knew we’d both also want cell phone service. We could have waited until we got here to figure it out, but we weren’t confident enough in our French to be able to deal with all the jargon we’d inevitably encounter at the local cell phone store. Plus, we felt it would be useful to have functioning cell phones as soon as we hit the ground—without paying huge roaming fees to continue using our U.S. numbers. So we did some research into how we could make that happen. If you’re planning to travel to France and want to have a French cell phone number, the following information may be useful.
GSM: The first important thing to know about cell phones in France is that they all use the GSM standard—unlike in the U.S. where there are several competing technologies. So you need to have a GSM-capable phone. In the United States, AT&T/Cingular and T-Mobile have GSM networks. We had both been Cingular customers since way back, so we had GSM phones already.
GSM uses different frequency bands in different areas: 850 MHz, 900 MHz, 1800 MHz, and 1900 MHz. Some GSM phones work on just one or two of these bands; others (usually called “world phones”) work on three or all four. France uses 900 MHz and 1800 MHz, whereas the U.S. uses 850 MHz and 1900 MHz. So it’s possible to buy a GSM cell phone in the U.S. that won’t work anywhere else. I had a tri-band phone (a SonyEricsson T68i, which uses the 900, 1800, and 1900 MHz bands) and Morgen had a quad-band phone (a Motorola RAZR V3), so we were both also set from that angle.
Unlocked Phones: GSM-based phones have a little removable chip called a SIM card that tells the phone things like what its phone number is and who that number belongs to. You can, in principle, get service from a new carrier, along with a new number, simply by purchasing a SIM card and popping it into your phone in place of the old one. That was exactly our plan: keep our phones, but get new SIM cards from a French provider. But most phones you buy in the U.S. have what’s known as a carrier lock, a special setting that prevents the phone from working with SIM cards from any carrier other than the one that sold it to you. The rationale is that the carriers usually sell phones very cheaply (or even give them away), assuming they’ll more than make up the difference over time with your monthly phone bills. But if you could use another provider’s SIM card, your original carrier would lose the ability to charge you for all those minutes. So they lock the phones to prevent this from happening. There are various methods to remove carrier locks—some totally legal and aboveboard, others more dubious. But we’d paid extra, when we initially bought our phones, for fully unlocked models straight from the factory rather than getting them from Cingular for exactly this reason: we wanted to have the freedom to switch networks whenever we wanted.
So we knew we were all set on the hardware side (apart from needing electrical adapters for the chargers—easily obtained for a few bucks at our local Radio Shack). Next came the SIM cards themselves. Read the rest of this article »