....If you still carry a very old Android phone.
Google is completely killing support for very old Androids.
The good news? That Samsung you bought three years ago will continue to work. It's only truly ancient devices — anything running Android 2.3.7 or lower. That's Android Gingerbread, which came out over a decade ago. If you're still carrying one of those in a holster, time to get another (and ditch the holster too).