Some older android phones like the Huawei P20 Pro had a combination of 40 MP main sensor and 8 MP monochrome sensor and combined them to produce a better image. But modern phones tend to have zoom, normal and wide-angle lenses which don't overlap in any meaningful sense.

Your idea about combining two lenses to make a better quality image could also be done with a single lens, just taking more photos in a row. Almost all phones (iOS/Android) do this for you already.

Different optical zoom levels.

Many phones already use information from both cameras, too.

Android phones have multiple cameras too.

Normal, wide, and zoomed

This has to be bait right? They’re different lenses with different focal lengths. Same as on Android phones with more than one lens.