Phone hype and cheaper parts

Demand shifts right. Supply shifts right.

Two events hit two sides of the market. The excitement raises what buyers want at every price, so demand shifts right. The cheaper parts raise what makers offer at every price, so supply shifts right. Both shifts raise quantity. One shift pushes price up and the other pushes it down, so the net effect on price depends on which shift is bigger.

Quantity rises for certain, while price may rise or fall depending on which shift is larger.

Common mistake. Students often move only one curve, or declare that price must rise. With both curves shifting right, quantity is the certain result and price is the ambiguous one.