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textMessageAvailabilityDidChange

Notification posted when text message availability changes.

Declaration

static var textMessageAvailabilityDidChange: NotificationCenter.BaseMessageIdentifier<MFMessageComposeViewController.TextMessageAvailabilityDidChangeMessage> { get }

Discussion

This notification is posted when the device’s ability to send text messages changes (e.g., SIM card inserted/removed, airplane mode toggled, iMessage account status changed).