A quick fix to Wi-Fi authentication problems on Android is to toggle airplane mode on and off, or "forget" the Wi-Fi network and reconnect to it.

That is what we are going to point out in this post. Overview Based on reports, the WiFi Authentication Error in Galaxy S3 happens without any service to trigger it.

How To Fix Samsung Galaxy A9 Authentication Error Occurred When Connecting To Hotspot Problem: HI, I have problem with my new samsung phone, samsung A9, it seems cannot connect with my PC hotspot.