I can’t connect my Philips Air Purifier after pairing If you can’t connect your Philips Air Purifier after successfully pairing, there might be some possible causes. Find out how here to resolve this. Old version of smart App installed Make sure the latest version of smart App is installed. Smartphone and Air Purifier in different networks Please, make sure your Air Purifier and smartphone are in the same router network. Pairing did not fully succeed Please, delete the current paired device and try to pair it again. The network is unstable Please, make sure the network you are using is stable.