Yes, they require wifi. Please use a 2.4GHz wireless network. The device does not support 5GHz wireless network. Meanwhile, please set the Wi-Fi authentication method to wpa2-psk or other lower level of the security method. A password is required. Even without a plan subscription, “Soliom Pro” will record the birds videos and store in the cloud for up to 3 days loop recording, and you can extend it by subscription or store them in the free 32GB cardy unlocking new birds in a gamified experience.