Go to Device Settings -> SD Card. If the SD card is recognized, you should see a pie chart of its available and used storage space, and you should also see a “Format SD Card” option at the bottom.
If your SD card is not recognized, the page will show a “No SD Card” text. Please check whether you have correctly mounted the SD card on the device. Note that Bosma devices support a micro SD card up to 128GB, and it must be formatted in FAT32 (you can use your computer to format the SD card in FAT32 format)
If your SD card is still not recognized, please try another SD card if available, or contact customer support