The newly released HomePod mini has a Wi-Fi connectivity issue complains users
Apple itself has its own suggestions about fixes you can try such as rebooting the device, but that has proven to be ineffectual. Now take a seat and bite on a bullet. Apple says that you might need to perform a factory reset if rebooting doesn’t do anything to fix the problem. And Apple also suggested to one HomePod mini owner that he reset his router; this actually did bring some short-lived hope since it worked, but only for one day.