Was payphones, i can think of plenty of reasons to have separate versions of each one.
Point and shoots still run circles around anything a cellphone can do. It's still a question of lens size/image sensor.
The big thing with these all-in-one phones, is that when your cellphone breaks or encounters a problem, everything breaks. That and when better components come out (mp3s, cameras) happen, you don't need to worry about upgrading everything or being left behind.
Roland Piquepaille writes: "As you probably know, melanoma is one of the deadliest forms of skin cancer, usually caused by too much exposure to the sun. Now U.S. researchers have developed a way to use a patient's own cloned T-cells against this skin cancer — without chemotherapy or radiation. For example, 'a 52-year-old man whose Stage 4 melanoma had spread to a groin lymph node and to a lung,' is now tumor-free two years after being treated by 'immunotherapy.' Even if these results are encouraging, 'more studies are needed to confirm the effectiveness of the experimental T-cell therapy.' But read more for additional details and references about this advance in cancer fighting."