not compatible with all mobile phones and devices (Nokia, LG, Samsung S 4G, etc.) and not compatible with all Smartphones When the proper adapter is fitted with the handset, it is not only compatible with more mobile devices, but also enables calls to be answered through VOIP, Skype and Google Talk through the device or computer Overall Rating: 3.6 Most Helpful Reviews I am so completely happy and satisfied with my purchase of this phone. It was WELL worth the cost. I use my handset ALL the time! I loved it so much, I actually bought one for my best friend! It's so much easier to use than holding my iPhone all the time! Thank you for a WONDERFUL product! I LOVE IT! How did the image on site compare with the actual product? Perfectly! Was the product free of any manufacturer defects? Yes! It arrived in PERFECT condition! This handset might just be the greatest product ever... 1) Consistent use allows you to lower your exposure to harmful cell phone radiation. Boom. 2) If you're like most women, your purse is full of crap. By the time you've located your ringing phone at the bottom of your purse, you've missed the call. That's no longer the case with this handset- it's big, bright, beautiful and easy to pick up and answer. The pick up/hang up button (works with iphones and HTC phones, in my experience) is perfect, and the volume buttons are great (works only on iphones, I believe).