New Delhi, Oct. 28 -- The Apple iPhone Duo marks many firsts for Apple: the company's long-delayed entry into foldables, its first new iPhone in two decades, and first new hardware design since the Vision Pro headset three years ago. For new Apple chief John Ternus the Duo is vital as it's the first bit of hardware launched in his watch. The Duo is also the first mainstream smartphone that can cost up to Rs.5 lakh in India.

It's fair to say that there's much riding on the phone's hinged shoulders.

For this reviewer, a week into using it as a primary device, it is clear that the iPhone Duo can achieve much for Apple in the long term.

With the Duo, Apple has tried to get two things right-ergonomics and versatility. The iPhone Duo takes a...