There is a small problem you can run into when setting up a Wi-Fi hotspot in previous versions of Android. By default, the SSID is just AndroidAP, and a lot of people don't change that. So if your phone, tablet, or laptop connected to such an access point in the past, they'd try again every time they saw that Android AP SSID. But as of Android 8.0 Oreo, any devices that never ran a previous version of Android will get a unique hotspot SSID.
There is a caveat, and that is that any device which has been upgraded to O won't see this behavior by default.Read More
Android O feature spotlight: Default Wi-Fi hotspot SSIDs are now unique was written by the awesome team at Android Police.