Troubleshooting My Philips Air Purifier app doesn't connect away from home If your Philips Air Purifier app doesn't work outside your home, find out here what you can do to solve the issue. The app is not up to date If your app is not up to date, this could cause it not to work properly. Please make sure the app is updated. The Internet connection is not working properly Please make sure your phone is connected to the Internet. Network problems on 3G/4G network smartphone If your smartphone is on a 3G/4G network, try using the app at a different location. The signal strength and data transmission speed provided by your network service provider can vary with time and with location.