The FCC has just approved a CDMA version of the Firefly phone for kids. The phone appears to have the same specifications as the GSM version including two one touch dial buttons, emergency call functions, and multi color LED lights. Phones for young children are gaining momentum in the US. Cingular has recently launched the GSM version of the Firefly, and Verizon has launched the LG Migo. There is no indication which CDMA carriers will pick up this model.
I seriously thought about getting a GSM one of these from Target for my 6 year old. From what I could tell I could stick in a family plan SIM card and have her linked up for $7 a month on T-Mobile (apparently the Firefly isn't SIM locked). But I decided to give it a miss because actually what I really want is a way to find out the location of the phone. Not just so that I could find my kid (I'd clip it to her belt) but also so I could find the phone itself if she lost it. That would definitely happen to her at least once. I'd be willing to pay a $1 extra a month to have that feature - okay carriers - GO!
Your best bet would be with a CDMA carrier. CDMA uses aGPS. GSM uses cell-site based stuff. Not as accurate, although GSM can support aGPS. Don't think anyone in the US does it, though. So Sprint, VZW, or Alltel, sometime this year. And I wouldn... (continues)
I love how these phones that have no features what so ever, and only allow for limited dialing are costing $$$. People looking for phones for their kids are not looking for a phone that costs anything, they want cheap.