Callback service is 100% legal. It only takes advantage of your cellular phone provider's existing pricing structure that does not charge its customers for incomplete or busy outgoing calls and does not charge them for incoming calls. Dialthrough/callthrough is 100% legal because you are simply benefiting from the pricing features already inherent in your cellular service contract to minimize your airtime charges. Please see the call back legal status on FCC website at http://www.fcc.gov/ib/pd/pf/call-back.html. That list can be found at http://www.itu.int/itudoc/itu-t/com3/callback/position.html. The list clearly mentions that Canada and USA allow all types of callback services as legal. SUBSCRIBE NOW and see it for yourself on how it will lower down your cellphone bills.