Verizon Migo  (with optional Chaperon service)
The Migo phone is $49.99 with a two-year service contract. The Chaperone service, which lets you locate the Migo phone via handset or PC, must be activated by a Family Share account, which is $9.99 per month. Chaperone with Child Zone, which allows you to locate your family member’s phone and get alerts when they enter or exit a specific area costs $19.99 a month.

Disney  Mobile
Disney Mobile phones are available at retailers across the country or online at http://disneymobile.go.com/disneymobile/home.do . The Red Disney Mobile Phone (DM-L-200) is $49.99 with a two-year contract. The Silver model (DM-P205) is $99.95 with two-year contract. Various plans are available, including a Kid Starter Plan with 200 minutes for $24.99 that does not include nights and weekends.

TICTALK by Enforma
The TicTalk is $99 and available online at http://www.mytictalk.com/LeapFrog/ . It uses pre-paid phone cards. There is no activation fee. Coverage is limited. 

Cingular Firefly
The Cingular Firefly is $34.99 with a two-year service contract and after a $25 rebate. This phone is only available from the Cingular eStore.(http://www.cingular.com/)

Kajeet
Kajeet is a pay-as-you-go mobile virtual network operator created just for families. The service lets parents control what services their kids use, and its offering of full-fledged cell phones for children gives kids the flexibility they want. http://www.kajeet.com/4u/index.html