stuck on “obtaining IP address” - old phone connects fine. thoughts?
If your phone connects just fine with other WiFi networks, then you have narrowed down to your network.
If you have determined the issue is with your network, then do you a bunch of devices connected to your network and is there a limit to the number of devices that can connect to your network?
If the issue is with your network, then I think I would go the web site of the router manufacture and look for a troubleshooting section or open a chat session with them to see if you can get up and running.
Motorola does have a troubleshooting section for WiFi.