I'm on straight talk in US running jelly bean on my RAZR. Works fine says sim unknown but got signal data ext.. works fine. Used radiocomm worked but low speeds reverted back to original settings works great. Ordered gsm micro sim of website. Your phone isn't locked
Sent from my DROID RAZR using xda premium
I am getting ready to order and try a straight talk sim in my razor max. Do you get 4g data or just 3G? There are so many people that say it won't work in the us, but you are the first one I have found.