Is it possible to loose my wifi connection on my Galaxy S3 but not on any other device on my ATT UVerse network? I can leave my phone on & charging on a a/c adapter at night, some mornings i won't have a connection, some days i do. I can have my phone on standby not charging & loose my connection. As soon as i select connect i get reconnected. I don't recall this happening anywhere else that i use wifi. Why would my phone loose it's connection on my home network and no other devices are affected?
Some smartphones like the Galaxy S III have a feature that automatically disables the Wi-Fi connection after the phone is locked or the screen times out. It usually takes effect after about 5 minutes of no consecutive usage. Your Wi-Fi connection may intermittently cut out and have to be re-connected. This happens to me many times per day. It's usually a weak connection, though.
I don't think it's a problem with your home router.