Smartphones replace a lot of things though: * camera (including film & development costs) * camcorder * long-distance phone service * answering machine * porta

Smartphones replace a lot of things though: * camera (including film & development costs) * camcorder * long-distance phone service * answering machine * portable music player (walkman, iPod, etc.) * GPS navigation devices Depending on their use they can save a lot of money relative to the the products/services they replace