Works fine. I made sure that the phone was not set to answer only when opened. I receive call fine with it closed. Once in a while I get a little static, which never happens when I am on the handset. Now I have to figure out hot to get the T Zones to work.

 

I have an unlocked/unbranded one on T-Mobile as well. No problems here. Enjoy it!

 

If you figure out a way to get tzones please let me know. Can you open the browser? I have a moto v80 which is exactly the same as the 600 and it's unlocked and tmobile couldn't help me out in figuring out a way to get the browser to work.. If you find a way please let me know it's killing me.

 

Motorola's site has the settings for t-zones and such and they send it via sms to your phone.