Here is a list of the ten most sought-after cell phone models by collectors, both classic and modern models that have reached a really high value in recent years. And if they belong to limited ...

Flip phones were the ultimate flex before smartphones took over the world. Owning one put you ahead of the curve, regardless of their svelte appearance, cutting-edge features, or expensive price tags.

Left: Classic textbook cell diagrams imply all parts are clearly visible and defined. (Credit: OpenStax/Wikimedia). Right: A new cell map generated by MuSIC technic reveals many novel components.