How to set the iPhone selfie backwards?

If the picture is taken in reverse:

The camera selfie is mirrored, and you can turn it straight by mirror rotation. You can also download a Meitu Xiu xiu - open and click to beautify the picture - select the photo you took yourself - click Edit - Rotate - then click left and right to rotate to change back to the positive direction.

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If the camera is in reverse:

Some phones do not have a front-facing camera, even if you install a selfie app, but you can not take a selfie, you can only turn the phone around to take a picture of yourself. The latest iphones have both front and rear cameras, so if you have an older model, it's normal to take a selfie in reverse.

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There is also a case that when you take a selfie, the camera camera is not set, set to the front camera, you can take a selfie (there is a switch camera button in the upper right corner of the photo mode, you can gently touch it to switch the main and secondary cameras).