Max size of SD card (Hi9Plus)

Hi, officially the Hi9 plus supports 128GB cards. I read about a claim that it would go up to 400GB. I’d like to use a 256GB card. Has anyone tried this out? Could it be that it depends on something else, and it works sometimes and sometimes not? I have the model with 128GB internal storage.

Whether your TF card is formatted or not. If there is still a problem after formatting, I suggest you change back to the original card.
Thank you for your letter

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