Flash process is erratic on Samsung Galaxy S20

[microbit-mark]

https://support.microbit.org/a/tickets/42830

Describe the bug
App works perfectly (flashing) on my iPhone X, but not on my Samsung Galaxy S20

It pairs with no problem:

but when I try to flash I get:

the weird thing is that I have got it to work twice out of about fifty tries, I'd really like to be able to flash from my Samsung then it would be truly portable. works from my old iPhone X as I mentioned above and works great from USB just not from my Android phone which is my new primary phone now. I have seen other complaints on the Google Play store of people with this

micro:bit version

• V1.3, V1.5, V2.0, not hardware related [Edit as applicable]

Device

• Make: Samsung
• Model: Glaaxy S20
• OS: ?
• App Version 2.8.8

Additional context
Add any other context about the problem here.

[davek61]

I have the same problem with my newish Pixel 5, and also with an older Android phone the Mi A1. And yet it works perfectly on our old IPad mini! I think that this problem needs addressing since using (cheap) Android tablets in schools to program microbits is a very nice way of teaching coding. But at present this is not possible it would appear.