Chosen Solution

I did a hard reset to grandson’s ZTE - Z557BL Tracphone and still cannot connect to wifi. Our internet and wifi work. I reset both the modem and router. Signal is excellent . The phone shows other neighborhood networks, but not ours. All other devices in our home connected fine when I put in our network SSID and password……what now???

Sounds more like a router configuration issue, is it working on 2.4 or 5 Ghz? You may need to tinker with operating mode, channel, or device specific restrictions to make it visible to the phone. I suggest you back up your current working settings first(from the router’s web interface), then check Can’t connect to home wifi and see if it works for you