Apple iPhone Duo review: This changes everything

Apple's iPhone Duo is an important phone.

The iPhone has been around for two decades, and this is the first time Apple has tried something completely different with its best-selling product.

Other companies have had foldable phones for years, but none of those carry the weight of a foldable iPhone.

Apple’s ecosystem of iPhone-related products, services, apps, and accessories is vast, and this is a massive new entry in that book.

After a week with the iPhone Duo, I’m happy to report that Apple has done an amazing job.

The iPhone Duo is the most exciting iPhone since the first one.

It’s not just an iPhone that turns into a small iPad when you unfold it.

The form factor and the clever things Apple has done to the user interface open up new possibilities, and after a few days, I found myself doing stuff on the iPhone Duo that I don’t typically do on a regular iPhone: I’ve played games for hours at a time, I’ve tied apps together in a side-by-side view that enhanced my productivity; I’ve used the Duo as a secondary display, next to the MacBook on my desk.

It’s not all perfect.

There are drawbacks, compromises, and there are bugs to iron out.

But a week in, and I already feel like I couldn’t go back to the regular, non-foldable iPhone. iPhone Duo review: By the numbers The inner matte display is gorgeous.

Credit: Stan Schroeder/Mashable Here are the key specs for the iPhone Duo: Displays : 5.4-inch, Super Retina OLED outer display with a 1,398 x 2,034 pixel resolution; 7.6-inch Super Retina XDR OLED display with a 1,878 x 2,670 pixel resolution, nano-texture finish.

Both displays support variable refresh rates up to 120Hz.