But make sure you get the latest firmware (R2AY004). The unlocked K700i I bought online had 13 month old firmware (R2AE033) which was never updated. This caused a hissing sound on voice calls and made the phone lock up every time I disconnected the bluetooth on my Palm T5 and Zire 72 after surfing the web on these PDAs. Rather than returning the unit to the online retailer, I sent my K700i to the Sony Ericsson repair center in North Carolina. SE updated the firmware (for free)on my K700i and I got the phone back a week later. I no longer have any issues and the phone works great.What a phone! This phone has lots of features. The screen is absolutely gorgeous. Reception is great on the T-Mobile network here in NYC and suburbs. On my T610, I was only getting 1-3 bars in my house and sometimes I would get dropped calls. Now I get 4-5 bars at all times and reception is great. Moreover, with the updated firmware, Bluetooth works great on my PDAs and bluetooth headset.Some people complain that there is only 41MB of memory on this phone. This is more than enough memory for me since I'm not using this phone as a PDA. I have transferred via Bluetooth a few of my MP3s from my PC to the K700i and use them as ringtones. The K700i is a great MP3 (or MP4 and other formats) stereo player. This is why people would love to have an expansion slot on this unit: they want to turn this phone into their MP3 player. Furthermore, the FM radio works pretty well too. But you need to use SE's wired headset (which is included) to get stereo sound from them. As a bluetooth geek, I don't like wires. But you may not mind. The camera is a big improvement from the T610 and actually takes decent pictures. Setting up wap and MMS on the phone was simple. Just go to Sony Ericsson's website and answer a few questions and you'll get all the settings for Wap, MMS and Email. SE sends a text message within a minute straight to your phone. I set up my Email manually as I didn't want another Email address. IMAP4 and SMTP works fine, as well as the Wap browser. I'm shocked by how well it works. Battery life is not that great. I have to charge it every day for 90 minutes. But then again I keep the bluetooth on at all times. Fortunately, all my accessories from my T610 work on my K700i, including my car charger.Again, just make sure you get the firmware updated to the most recent version. At the moment, that is R2AY004. If you do that, you'll discover that this is one magnificent phone. I'll never buy a locked phone again.