kajeet gives a worrying parent a break. You can let your kid have a mobile phone that functions like an adult cell phone BUT some customizations parents can build it. Not a "kiddie" phone, not a fully 100% adult cell phone----it's a good solution for everyone.
I love kajeet!!! My 9 yr and 10yr old boys share one. They take it with them when they walk to friends houses or when riding bikes in the neighborhood etc. One day, the kajeet turned up missing. My 9 yr old had it last and misplaced it. I groaned that I would have to replace said cell phone but realized I signed up for GPS so I logged into our account. BINGO, the phone was instantly located at our neighbors house!! See screen shot: http://1.bp.blogspot.com/_O4aXL2yWXaw/ShHWpei4WUI/AAAAAAAAA-8/AAxz17YxK-0/s1600-h/screen-shot-of-GPS.gif
kajeet has been a wonderful little gadget/service for our tween daughter! we love the parental controls and she enjoys the freedom to use her own phone. I love that they are not pricey either. And with a promo code we ended up saving about $25. We used the promo code "bargain" which saved us 15%.