Disable thumnnails on android firefox
The newtab thumbnails disclose too much information about my business interests. Often someone else will use my phone to look something up. If I can't disable this I will have to delete Firefox. This problem seems to be handled in the windows version.
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Hello,
You can always use the the Guest Session feature to disallow the user from seeing anything apart from the default (i.e history, bookmarks, autocomplete).
To enable this, go to menu > Tools > New Guest Session
Once it is over, you can go to Menu > Exit Guest Session to have your Firefox back to normal without having anything else added by the guest usage.