Loose is the real thing; If it's not loose, it's a high-quality knockoff made by Huaqiangbei.
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Loose because of the addition of wireless charging module, the back structure needs to be changed, and the connection shaft has been adjusted, so there is a slight loosening, which can not be avoided in the current mold. Future updates should improve this.
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Bought loosely, some say it is a quality control problem, some say it is folded, because it is treated with a rubber chain, it is too tight to easily open, wear will be very strong, so there is only a certain gap.