Since SD cards have a limited number of reading and writing times and life span, they are also influenced by different specifications and brands.  When the life span is approaching, the write operation will become unstable and cause failure.
At present, the commonly used storage particle of SD card is TLC, and its theoretical maximum writing life is (500-1000).

Here are common storage size corresponds to the theoretical maximum recording time:

Below are reasons and solutions when you meet some SD card issues:

1. APP shows " No data at this time" when you replay recordings.

Reason: 1. SD card is new, there is not enough recording content yet.

Solution: Retry after 10 minutes.

Reason: 2. SD card is not recording

Solution: Check whether there is free space on the SD card, please format the card.

2. Skipping during SD card playback.

Reason: SD card has been used for a long time (close to the write life span), resulting in a sharp drop in writing speed.

Solution: Change a new SD card.

3. No SD card

Solution: Cut off the camera power, re-insert the SD card. Then reconnect the camera power.

Please change a new SD card if still not working.

4. Format failed/Mount failed

Solution: Cut off the camera power, re-insert the SD card. Then reconnect the camera power.

Please change a new SD card if still not working.