I know this phone is no longer available and VERY hard to find. I bought an R520m new and unlocked a couple of years ago specifically for international travel (Asia and Europe). I'm glad I did. This is a phone that never really caught on in the marketplace, which is a shame. It's a phone that was simply ahead of its time. For the price (I got mine for under $80 on Ebay) it absolutely cannot be beat. Quadband, Bluetooth, IR, proximity-sensitive speaker, GPRS, Outlook sync. The list of features just goes on and on - features found today (if you can even find all of these features) in phones that are four times the price. It's built like a tank. The most important features in a phone, for me, are RF and durability. The R520m has terrific RF and sound quality. I telephone often from China to the US, and people tell me I sound like I'm in the next room. As for durability, did I mention it's built like a tank? The aluminum housing is tough as nails. The keypad is durable and has positive feel and response. My guess is that this phone never caught on because it's not "sexy". Actually, my GF didn't want one because she thought it was ugly. While I generally prefer a clamshell to a candybar style, this one works just fine for me. There aren't many phones around now with the overall quality and heaps of features this phone has. And that's a shame!