(Image credit: Tom's Guide)

The iPhone Duo is proving very difficult to come by , and right now, on the official release day, Apple's own delivery estimates stretch into late January of next year. The Duo is, by our metrics, an excellent foldable phone, but it isn't the only option available to you right now. In fact, there are more of the best foldable phones to choose from, none of which have the same availability issues Apple's option is experiencing.

Obviously these phones have one key difference, in that they run Android rather than Apple's iOS. That is enough to turn off a lot of people, especially if they've been Apple users for a long time.…