Missed Communication Notification System for Mobile Devices
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Solution Overview
Problem
Users are not notified of missed communications when their mobile device is out of service range or in airplane mode, as they do not receive calls and are unaware of attempted calls while in this state.
Innovation Solution
A system that transmits a notification to the intended recipient's device when it comes back within service range, using a push notification messaging service to deliver a buffered message indicating a missed call, which is end-to-end encrypted and only shown from trusted callers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a user is out of service range or in airplane mode, then the device cannot receive calls, but the user also cannot be notified of missed calls
Solution Approach 1:
The system performs preliminary actions by sending the missed call notification to a second device immediately when the caller is redirected to voicemail, rather than waiting until the first device becomes available. This ensures the notification is captured and preserved even though the original recipient cannot receive it at that moment.
Solution Approach 2:
A second device acts as an intermediary to receive and hold the missed call notification on behalf of the first device. When the first device becomes available, the notification is transferred from the second device to the first device, ensuring no information is lost during periods when the primary device is unavailable.
2Loss of information
If the system notifies users of all missed communications, then communication awareness is enhanced, but notification spam increases
Solution Approach 1:
The system applies different notification rules to different callers by checking whether each number is in the user's contacts list. Notifications from contacted numbers are suppressed, while notifications from non-contacted numbers are displayed. This local differentiation quality ensures important notifications are not lost while filtering out unwanted ones.
Data Source
AI summary
A device implementing a system for missed communication notification may include at least one processor configured to receive, from a server over a first communication channel, a message indicating that another device initiated a communication with the device over a second communication channel at a particular time. The at least one processor may be further configured to determine, by the device, whether the communication was established with the other device over the second communication channel at the particular time. The at least one processor may be further configured to provide, for display, an indication of the message based at least in part on a determination that the communication initiated by the other device was not established over the second communication channel at the particular time.