I've been using an e-mobile device, but its range has been disappointing in areas that I'm frequently in. Since this one uses the DoCoMo system, I picked one up at Amazon.jp to try it out. I'm happy that it connects much better than the e-mobile device in a couple of places that I often need internet access. I'm going to stop my e-mobile account today. The only problem is that my e-mobile account is unlimited time, so I downloaded an online timer (PPP Genie for Mac) to keep track of my online time on this device. I'm going to have to learn to live without a full time connection when using this one.