Don’t sit things on top of your Apple TV, this can interrupt its wireless signal. If you don’t want to use Wi-Fi during setup, you can connect it to an Ethernet cable. This is definitely advisable if you have a fickle home wireless connection. After configuration is done, your Apple TV is ready to use.
Can you use Apple TV with WiFi?
It’s important to note that video streaming does not work without WiFi. You can browse the internet and stream music using your iPhone/iPad while the Apple TV is just on bluetooth but no video at this point.