Pretty sure its either an AT&T bug in their newest security update because everyone else that has this problem is on AT&T. It's either that or it is a virus, download Malwarebytes and get the free trial, (it wont charge you when it ends), and do a full scan. If there is a virus then delete it on malwarebytes and if it ever comes back then back up your device and do a factory reset. But I would expect for most people that it is an AT&T problem.
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