Been done already. Sorry. Google for selfie drone. I think you can buy it from the Apple store. Also, people have done drones inside phone cases too. Not sure if this is a great business idea btw.
Edit: maybe a scenario illustrates this best.
Me: “Mimi, what do you think of this? Is it right?”
Mimi peers, no doubt fancy AI tech whirring in the bg.
Mimi: “Looks good! I would also suggest recapping sohcahtoa.”
Ding-dong.
Me: “Mimi, can you get the parcel please.”