How to Change File Extension on iPhone

Update (September 2022): Apple introduced this feature in the latest version of iOS 16.
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This video shows how to change a file extension on iPhone.

It would only make sense to change the file extension if you are sure that the contents of the file are in the format that the extension belongs to, otherwise Apple strictly does not support simply changing the extension of a file.

After watching this video, you might also be interested to know how to make files undeletable or hidden and return them to their normal state. Below is the link to my video on this subject:

https://youtu.be/cNmRyI_kc7w

Please take the opportunity to connect and share this video with your friends and family if you find it useful.