Check your wi-fi router settings and check "AP Isolation" is not
enabled. 1st Gen Chromecast is 2.4GHz only, if AP Isolation is on and
your phone is on 5GHz wi-fi, it won't see the Chromecast.
The 1st Gen Chromecast supports only 2.4GHz wifi - so check your network
and device supports that else you won't be able to see or use the
Chromecast. Providing that's all ok and you haven't already done so, try
to factory reset the device (press and...
