subject: contract phones – make your call rates cheap!! [print this page] In contract phones deals one has to maintain contract with the service providers for the time period up to 12 to 18 months. While the time period is running one cannot change their network provider. But as soon as the time period gets over he/she can switch to some other network if he/she wishes to do so.Different handsets like Samsung tocco lite, blackberry bold 900, HTC desire HD, Motorola milestone 2, Sony Ericsson vivaz, Nokia E7, Apple I-phone, LG optimus one and many more amazing handsets are offering contract phones which is given by the network providers.