For some reason, several Android devices connect to the home wifi and then they mysteriously disconnect. This has been a problem that has gone on too long in this household and I was getting terribly frustrated. I finally think I have traced the cause down to the router encryption.
We had the router set to WPA2-PSK [AES]. The solution? I set the router to WPA-PSK [TKIP] and now the devices are happily staying online. We are really worried about our wifi being hacked, so I doubt that this makes much of a difference in our lives.
Not sure if anyone else has been noticing this, but would be good to hear if there are others out there.
If you were ever wondering what the difference between WPA2 vs WPA (because I know it keeps you up at night). https://learningnetwork.cisco.com/message/14084