 Demand for the Galaxy Note 7 on-launch was high, breaking pre-order records in South Korea and causing international releases to be delayed in some markets due to supply shortages.The Galaxy Note 7 also received positive reviews from critics, praising the quality of its construction, HDR support, as well as its streamlined user interface, although it was panned for its high price and increasing similarities in overall specifications to the main Galaxy S series phones.On 2 September 2016, Samsung suspended sales of the Galaxy Note 7 and announced an informal recall, after it was found that a manufacturing defect in the phones' batteries had caused some of them to generate excessive heat, resulting in fires.