This wikiHow teaches you how to delete photos you've shared in Google Hangouts conversations using an Android phone or tablet.
Steps
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Step 1. Visit the Google album archive using a browser
You can use any browser, such as Chrome or Samsung Internet, to access your photo archive.
If you are not already signed in to your Google account, follow the onscreen instructions to log in
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Step 2. Select the Hangouts Photos album
You may have to scroll down slightly to see it.
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Step 3. Select the album containing the photos you want to delete
A separate album will appear for each Hangouts account you've shared pictures with. By selecting the album, all the photos you have sent to another person or group will be displayed.
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Step 4. Select the photo you want to delete
This will open it.
If you want to delete the entire collection instead of just one photo, press the button with the three dots ⁝ at the top of the album, then select Delete album.
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Step 5. Press on ⁝
This button is located at the top of the photo. A menu will open.
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Step 6. Select Delete Photos
The image will then be removed from the folder and from the conversation.