Why does my galaxy s6 frequently drop from my wifi network?

[Android Central Question]

I frequently get dropped from wifi at home. The only message I get is "unable to authenticate". I am on an ATT network. I can sometimes go a week without an issue and sometimes only minutes. I usually can turn off wifi and turn it back on to reconnect. I have flushed cache, pulled the sim card, had ATT replace the router twice, called att and sprint support and taken the phone to a sprint store with no resolution or anyone finding the issue.

Anyone else have this issue?

 

[B. Diddy]

Welcome to Android Central! Do you only use a combination modem/router from AT&T? See this guide for some tips: http://forums.androidcentral.com/am...roubleshooting-wi-fi-connection-problems.html