There are three ways to accept an incoming call:
- The application is running in the foreground (default case)
- The application is running in the background
- The device is locked
1. The application is running in the foreground
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If CryptTalk is active in the foreground when an incoming call arrives, the incoming call screen is shown, where you can accept or reject the call. Tap the green “Accept” button to answer the call or tap the red “Decline” if you do not want to accept the call. Tapping the “Accept” button answers the call – the secure communication channel establishment will begin immediately. Tapping the “Decline” button rejects the call, of which the caller will be notified. |
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2. The application is running in the background
If the application is running in the background and notifications are enabled, iOS will notify the user of an incoming call in one of three ways:
| “Banner” type notification at the top of the device screen. Tapping the notifications accepts the call. |  |
| “Alert” type notification in the center of the screen. Tapping the “Answer” button answers the call, while tapping the “Close” button silences the ringtone. |  |
| Notification when the device is locked. The call can be answered by sliding the notification to the right. |  |
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