No, we cannot use the cover of Oppo Reno 2 in Oppo Reno 2 F, because the style of pop up camera is different in both the phones. In such a situation, if you use another cover, then your camera will not be able to open.
The image of the open pop up camera of both the phones is shown below, which can be seen clearly, the style of both is different.
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OPPO RENO 2