Last week, reviewers published their impressions of the $1,999 iPhone Duo —Apple’s first foldable phone—a few days before the device became available on October 23.

SAN FRANCISCO, Oct 26 (Reuters) - Days after launching its first folding iPhone, Apple (AAPL.O) acknowledged on Monday that some of the devices exhibit display problems and ​said it will replace them.

The device attracted strong initial demand, with online orders selling out quickly and supplies remaining limited in some markets.