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. 

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