Antminer S3 and S1 are both WIFI. They both can be finicky but adding an external antennae usually sorts them out.
I wouldn't vouch for going for a WIFI miner though, and that bitmain decided to drop it for their (now EOL'd) flagship S5 is telling.
Thanks, I looked at the S3+, but it said it was Ethernet as well. Do you happened to have a link to someplace I can buy the S3 that comes with WiFi?
I share internet with my neighbor and do not have physical access to the router, so I need WIFI.
I'm not sure why they would drop it from their product line, as it's always better having more options, especially with a standalone unit.