Also, rebooting the router may help.
Also, rebooting the router may help.
Hmmm. That’s weird. I’m running 12.0.1 on my iPhone and it connects wirelessly to my printer just as it always has. Maybe I just don’t understand the problem.Didn’t need a router in OS 10 or 11. Apple has made a change where one cannot direct connect to a WiFi printer without a router. It appears that Apple now tests to see in the internet is present and if not disconnects the WiFi connection. 25 seconds later it attempts to connect again which it will do for another 25 seconds.
Here's the Apple troubleshooting guide for AirPrint. If you can't print from your Mac or iOS deviceDidn’t need a router in OS 10 or 11. Apple has made a change where one cannot direct connect to a WiFi printer without a router. It appears that Apple now tests to see in the internet is present and if not disconnects the WiFi connection. 25 seconds later it attempts to connect again which it will do for another 25 seconds.
Here's the Apple troubleshooting guide for AirPrint. If you can't print from your Mac or iOS device
You aren't supposed to connect directly to the printer through Settings under the WiFi tab. Try these directions. Use AirPrint to print from your iPhone, iPad, or iPod touch