The developer of Simple Mobile Tools, an Android app suite which has been historically well respected in the FOSS space, has sold their apps to a company called ZipoApps, a company that buys apps from independent developers to add advertisements and trackers to them. I highly suggest uninstalling any of the Simple Mobile Tools apps you have on your device and looking for alternatives.
Sources: https://www.reddit.com/r/SimpleMobileTools/comments/187w64x/simple_mobile_tools_bought_by_zipoapps/
https://github.com/SimpleMobileTools/General-Discussion/issues/241