1. Please insert SD/TF card into camera, it will automatically start recording. And after 5 mins, it can playback.
2. If there is no SD/TF card detected, please go to APP setting to format SD card. After formatting SD/TF card, it will automatically start recording. Please make sure you download the important files before formating.
The maximum storage is 128GB. Once it goes full it will overwrite it, so the recording will be continuous.
Notes: Before pulling out SD/TF card, please cut off device power! Otherwise, it might be damage SD/TF card and lose data.