SEOUL, April 23 (Reuters) – Samsung Electronics Co Ltd is retrieving all Galaxy Fold samples distributed to reviewers to investigate reports of broken screens, a day after it postponed the phone’s launch, a person with direct knowledge of the matter said on Tuesday.

The retrieval comes as the world’s biggest smartphone maker met with embarrassment ahead of the foldable device’s U.S. release on April 26, with a handful of technology journalists reporting breaks, bulges and blinking screens after a day’s use.

The South Korean tech giant postponed the handset’s launch for an unspecified period of time while it investigated the matter. It said initial findings showed the issues could be associated with impact on exposed areas of the hinges.

A representative declined to comment further