Zenfone 6, running Android 10.
The device will not let me format the SD card to be used as internal memory, only external.
Please direct me to instructions for this.
Because this function requires the cooperation of both the mobile phone and the SD card, based on the consideration of stability and use experience, there is currently no plan to introduce this function.
You can refer to the previous official reply:
Thanks for your assistance, however I'm an English speaker and Google translate cannot translate this response. Can you send me an English translation please?
It is not recommended that you do this, but if you insist, you can google the method to enable this feature. My language family is Chinese, so I am looking for a Chinese method. If you want to teach in English, you should also google it.
The short answer is that it's no longer possible to use a SD card as storage for apps. You can only store media files. This decision that was taken by Google since apps on SD-cards caused too many bugs