Is it possible that a Delivery Report was received for a SMS message but the phone device does not display the SMS message?

It is possible that delivery report confirms that the message was successfully delivered to the handset’s SMS subsystem (e.g., its memory or SIM), but was NOT necessarily rendered or displayed to the user. 
 
Here are some scenarios where this might occur:
• Software or UI Glitches: The handset might receive and acknowledge the SMS, but a software error or bug in the messaging app could prevent the message from being displayed.
• Storage Issues: If the phone’s SMS storage is full or corrupted, the SMS might be stored but not properly processed for display.
• SIM or Device Issues: In some cases, problems with the SIM card or the device’s firmware could cause the message to be acknowledged at a lower system level, while the higher-level user interface fails to show it.
• Delayed Processing: Sometimes, network delays or internal processing delays might lead to a scenario where the receipt acknowledgment is sent, but the actual display of the message lags or is missed due to timing issues.