My volume is turned up, it's not on mute, alarms and other things that make noise work, it's not set to "do not disturb" or anything like that. If I happen to have the iPad open when a Facetime call arrives I can see it, but it's silent and not ringing. Facetime works fine except if somebody calls me it won't ring.
Go to ‘Settings’, then to ‘Do Not Disturb’ and make sure it is set to allow all calls from FaceTime.
Go to ‘Settings’, then ‘Sounds’, and make sure you have a ringtone for calls / FaceTime set.
Finally, make sure your iPad is not in Mute mode by swiping from bottom of the screen upwards and tapping the ‘Bell’ icon to disable it (or, if you have an older device, and you have ‘Mute’ set under ‘General / Use side switch to...’, switch the side switch on). Having Mute mode enabled will prevent the device making any sound when called.
Several things have to go correctly when an incoming FaceTime call happens.
- Apple's push notification servers have to have a recent internet address for the "location" of your iPad.
- The network needs to deliver that push notification to your router.
- Your router needs to send a wake notification if your iPad is sleeping.
- Your iPad needs to be connected to the WiFi network or wake and reconnect, get an IP address, receive the push notification before the call times out.
Things that make your network more reliable:
- Cellular Data connection on the iPad so that there is a chance to receive the notification from WiFi and from the cellular data
- Plug the iPad into power so that the radios take longer to power off and dissociate from the network.
- reduce network congestion on your network
- increase the signal between your iPad and the providing WiFi and cellular data radio base stations
- connecting to the WiFi each time you change network locations to update Apple's push servers with your iPad's current location. For example - if I leave my house and go to a coffee shop with my iPad in a bag - it won't connect to the coffee shop and receive FaceTime without my help since
You can also ask people to send you an iMessage before they try to face time or to make two face time calls in a row. The first notification might wake up the router and iPad and the second would then go through.