The rumors were true, and Apple has now decided to stop selling the smallest iPhone, the iPhone 13 mini. The iPhone 12 mini had already been discontinued earlier.
This means that the smallest iPhone without a home button that Apple currently sells has a screen size of 6.1 inches. Both models of the iPhone mini had a screen size of 5.4 inches. If you still want to buy the smallest possible iPhone, the iPhone SE is still available, although it has a design similar to the iPhone 6, which was released in 2014. Its screen size is 4.7 inches.