The breakdown reveals that a lot of the cost savings on the Nokia 105 is due to Infineon Corp.'s PMB7900. This one chip combines the baseband and RF Tranceiver allowing for it to handle GSM/GPRS functions. Combining all of this on one chip allows Nokia to get away with including only three ICs on the phone. An earlier, similar model called the Nokia 1110 used to have six ICs inside. IHS analyst Wayne Lam sums it up by saying, "This is the fruit of nearly a decade's worth of integration. By riding Moore's law and holding the line on features, Nokia has gone from six discrete integrated circuits (ICs) to just one core device plus two other ICs."
The three integrated circuits in the phone have a cost of $5.25, representing 39% of the cost of materials for the device. The color display, at $2.25, accounts for 17% of the cost of materials. By using a low end display with resolution of 128 x 128, Nokia can keep the price cheap. Besides the FM radio, the phone offers multiple alarm clocks, a speaking clock, battery life of 35 days and a flashlight. The device is also water and dust proof. These lower end models still account for the lion's share of Nokia's business. In the first quarter of this year, the company shipped shipped 5.6 million Lumia products, 500,000 Symbian-based devices and 55.8 million feature phones.
source: FierceWireless (1), (2)