I have a Samsung Galaxxy A30s and sometimes it closes my background apps. For example, i open messages, contacts and settings and leave them open. Sometimes (not always), when I go back to the list of opened apps, I have only one opened app.
I don't understand why this is happpening...can you help me?
@gsrodrigues: If you go to Settings > Device Care > Memory > Check the drop down list for any apps you would like to keep open in the background, and untick them. Now, they won't automatically close, allowing your to access them from the Recent Apps menu. Hope this helps.