Hi Balaji,I had the exact same issue as you did, it appears the system only calls pushRegistry(_:didUpdate:pushCredentials:for:) when the token is updated. See https://developer.apple.com/documentation/pushkit/pkpushregistry/1614472-pushtoken .You can call pushToken(for:) to retrieve the token cached. It appears PKPushRegistry fetches the latest token from the system. func registerForVOIPNotifications()
{
guard voipRegistry == nil else {return}
voipRegistry = PKPushRegistry(queue: nil)
voipRegistry.desiredPushTypes = Set([PKPushType.voIP])
voipRegistry.delegate = self
useVoipToken(voipRegistry!.pushToken(for: .voIP)) // use latest token cached
}
func pushRegistry(_ registry: PKPushRegistry, didUpdate pushCredentials: PKPushCredentials, for type: PKPushType)
{
useVoipToken(pushCredentials.token) // update token if needed
}
private func useVoipToken(_ tokenData: Data?) {
// Do whatever with the token
}Hope it helps.Hugo.
bhugo
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