I use this headset with my nextel motrola and my Tmobile samsung. It`s great. I switch from one phone to another depending on my need. I can turn off the blinking blue light in the dark if i don`t want to be noticed. This headset has so many features. The only problem is the connection. when the phone is on my belt and i`m walking around, the signal goes weak and i have to bring the phone closer to the headset to make the connection better. But sitting in my car, i don`t have this problem. Other than that, everything is just great!!