Incoming Ulefone U7 + extras! Have you ordered yours yet?

[Pirate_Freder]

Thank you for clarification but where is "quick boot" option ?

I've a Samsung microSD UHS-1 64GB formatted in FAT32 to work with old phone: do you know if file systems exFAT or NTFS are supported ?

Settings>Accessibility>Quick boot, towards the end of list

I have the same SD, it was exFAT when inserted and the phone refused to recognize it, so I allowed in-phone format (to FAT32).
One NTFS formatted USB stick I connected through OTG was also not recognized... FAT32 was OK.

Same here, in my experience, whenever a phone is rated for 32gb max SD you have to format 64gb to FAT32. I'm currently using my Team Group UHS-1 64GB getting 21.4MB/s read and 8.03MB/s write. A little slow on the write but super fast read .