Why does Wyze keep saying 32GB is max limit for microSD cards?


Yes, I have seen https://support.wyzecam.com/hc/en-us/articles/360012429891-What-size-and-kind-of-microSD-cards-does-Wyze-Cam-Pan-support-# that talks about the size, but, unless Wyze is doing something odd with the firmware (that source changes don’t show), then there should be no reason at all to limit the microSD card to 32GB.

Let me elaborate, FAT32 does have a limit of 2TB for partition size, and it also does have a limit of 4GB for file size, but, that is the only limits it has.

Wyzecams don’t write files that big, and, nobody is using a >2TB microSD card.

*Note: The camera will recognize larger cards (64GB+) that use exFAT, but these cards are less stable and are more likely to experience issues in the long run.

exFAT is an all around better, faster, and more robust filesystem, so, in what way would these be " less stable and are more likely to experience issues in the long run"?

You can format ANY of these cards to be FAT32, as I mentioned, the limit is 2TB per partition. If you don’t want to use exFAT, that is fine, but, there have already been millions of hours of testing of exFAT, and, it is more robust than FAT32 ever was.

Now, on to the size of the microSD card. In every single case, the bigger the NAND capacity is, the better it is for write leveling.
These cams write data, and the more times you write to the microSD card, then the less life it has left, which is why bigger cards are better, and provide more robustness in longevity over smaller cards.

Which finally brings us to this part of the article linked above…

While there are ways to force larger cards onto the FAT32 format, they are less likely to be recognized by the camera and may corrupt your data.

Why is that exactly? Linux kernel 3.10 doesn’t self impose a artificial size limit, and how exactly would the data become corrupted just because you used a bigger microSD card? I looked over the 3.10 kernel patches, and nothing in them would suggest that anything can be corrupted data wise because of the filesystem.

Please keep the replies of a technical nature, this is meant to find out exactly what is going on here with the verbiage in that article.