Minecraft Bedrock recognizes .mcpack (and .mcaddon ) as the official extensions for packs. A properly structured .zip is identical in format – just with a different file extension – so renaming is safe and doesn’t corrupt the file.
If you prefer not to touch file settings, you can use browser-based tools: how to convert zip to mcpack link
: Open the Files app, locate the file, long-press it, and select Rename to change the extension to .mcpack . Online Converters and Sharing Minecraft Bedrock recognizes
Directly renaming can be tricky on mobile without specific apps. locate the file