I have a problem for quite some time now. An app called xeroxservice which does not have any icon except that of apps like Google framework etc keeps downloading and installing itself without permission and notification. I can locate the apk in download folder. If I Uninstall it, it downloads another apk and install itself. It is surprising that unknown source is unchecked and play store automatic update turned off. Virus scan doesn't detect anything and my device is not rooted. I Uninstalled all bloatwares and even stock browser with adb. Is there a way I can handle this it without factory reset? Thanks friends