Samsung's flagship Galaxy Note 7 smartphone is due to go back on sale in South Korea on Monday, following a safety recall.
The company asked customers to return their handsets after some users reported their phone had "exploded" during or after charging.
Samsung had sold about 2.5 million Galaxy Note 7 devices across the world before the recall.
In South Korea about 80% of those sold have been returned to be replaced.
In Europe and North America the figure is lower but still way above 50%, according to company sources.
Samsung insiders say that 95% of the people returning their handset are opting to continue with a Samsung model.