My DJI Mini 2 seems to have this consistent problem where the display device goes blank when flying a second battery flight. I have to restart the DJI Fly app while the drone is in limbo. I am using a Samsung S6 phone and  Samsung TabA8 tablet.

Hi there. Thank you for reaching out and we do apologize for the inconvenience. Our apologies for the late response regarding your inquiry but we are now here to help. Can you please confirm if you still experience the said issue? Does the issue only occurs on that specific battery or does it shows on all the batteries that you use? Please keep us posted. Thank you.

No such problems noticed with several Samsung S6 here.