Unlike Java, pressing F2 won't take a screenshot.
The only way to do it is to press the button on the menu.
Linked issues
Comments 6
What specific device are you using. Please do not choose "Multiple" without mentioning the affected devices.
What specific device are you using. Please do not choose "Multiple" without mentioning the affected devices.
This might probably forward to MCPE-185453
Thank you for your report!
We're resolving and linking this ticket forward as a duplicate of MCPE-185453, as that ticket contains more detailed information and/or has already been triaged by Mojang.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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The 1.21.30.23 changelog states that it added this feature, but it doesn't work. Minecraft Beta & Preview - 1.21.30.23 – Minecraft Feedback