These are issues that should have come up in real-world testing though, and should've been solved then long before reviewers received units to use for extended

These are issues that should have come up in real-world testing though, and should've been solved then long before reviewers received units to use for extended periods of time. Problems crop up. The main selling point of the phone breaking completely within 24-48 hours is far worse than the usual kinds of issues that tend to show up in early production.