It happens just today on my phone which is quite weird and it prompt me to wait for the developers to release the update for the mobile DJI apps. I can't fly it with my phone today onwards, but so far my Tablet S7+ still works.

DJI please look into this matter, which is frustrating for us during last minute when we already plan for our schedule about the flight.

Hi there. Thank you for reaching out and we're sorry for the trouble that this has caused. Can you please try to uninstall and reinstall the DJI Fly app on your mobile device to see if the issue persists? You may refer to the download link below. Please keep us posted. Thank you.

https://www.dji.com/downloads/djiapp/dji-fly

DJI Paladin Posted at 8-10 04:01
Hi there. Thank you for reaching out and we're sorry for the trouble that this has caused. Can you please try to uninstall and reinstall the DJI Fly app on your mobile device to see if the issue persists? You may refer to the download link below. Please keep us posted. Thank you.

https://www.dji.com/downloads/djiapp/dji-fly

Still the same after reinstall it, it keep crashes, not sure what happen

Just these few days started and I try open it, it won't open.

I don't know how you still have the app available on your Tab S7+. No chance of getting it working on mine. Bug detected...wait for dji to fix

Here is a link on reddit with the info for 1.6.12, worked for me. If your not tech savvy wait for DJI.

https://www.reddit.com/r/dji/comments/wjjsux/found_a_fix_for_my_pixel_6_pro_not_running_the/

djiuser_UDp53gdKSffR Posted at 8-10 10:11
I don't know how you still have the app available on your Tab S7+. No chance of getting it working on mine. Bug detected...wait for dji to fix

Well, I've tried yesterday, so far my tab s7+ fly apps are working fine, still manage to open the apps for now, as for the phone. it instantly crashes when I open it

rajien Posted at 8-10 11:09
Here is a link on reddit with the info for 1.6.12, worked for me. If your not tech savvy wait for DJI.

https://www.reddit.com/r/dji/comments/wjjsux/found_a_fix_for_my_pixel_6_pro_not_running_the/

Wow,  thanks mate, I'll try it

Same problem!  Samsung  S21 Ultra

FabYOUloSe Posted at 8-11 14:56
Same problem!  Samsung  S21 Ultra

ok  Guys,  have received this version app. DJI FLY APP 1.6.12. It works perfectly on my Samsung galaxy S20+ and   S22+
Download from here: https://drive.google.com/file/d/11Dzw4aC7IzdBacXMHvPwgd0bdA-Za34S/view?usp=sharing

fans94c17851 Posted at 8-11 21:59
ok  Guys,  have received this version app. DJI FLY APP 1.6.12. It works perfectly on my Samsung galaxy S20+ and   S22+
Download from here: https://drive.google.com/file/d/11Dzw4aC7IzdBacXMHvPwgd0bdA-Za34S/view?usp=sharing

Alright thanks mate.

With the latest security update you will never get V1.6.9 working with a S21/Ultra (the TAB S8 did not get the security update yet there for it still works with it). Had the same issue yesterday, the APP closes and you get a bug notification. V1.6.12 for sure fixes this issue. Decided to get the DJI RC, do not want to get this issue everytime a security update occurs.

Briansoft Posted at 8-11 23:02
With the latest security update you will never get V1.6.9 working with a S21/Ultra (the TAB S8 did not get the security update yet there for it still works with it). Had the same issue yesterday, the APP closes and you get a bug notification. V1.6.12 for sure fixes this issue. Decided to get the DJI RC, do not want to get this issue everytime a security update occurs.

Yup, its a pain in the neck, although security update was good for us Android user or Samsung user. Just that DJI won't be able to keep up with it. But it'll fix soon.