I don't get it, how could she send him a photo when she doesn't know him or his number? It doesn't say anything about bluetooth either.

Base +6, Butt Ox -6, Nulushio +7, MACZ2021 +6

It's because of an application on Apple phones called AirDrop, it comes installed with all of them
You can send images or files to other iPhones near you even, if you don't know them, and it shows a preview like in here
If you ask me the ability to just flashbang any picture to random people is not a great idea but hey it makes for good doujins

Base +6, DarkFire493 +6, whatsathrowaway +6, e hentai user 8922 +6, Bubblejum +6, AhKai +6, TheBrojangles +6, BigBanta +6, Syerathe +13, anonymousMember +6, alphabetagama +8, MACZ2021 +6, IcyHot32 +9, and 2 more...

They're supposedly using AirDrop, but I don't know if it actually works like that since I don't own an iPhone.

edit: Nevermind someone already offered context.

Base +7, AhKai +6, TheBrojangles +6, MACZ2021 +6

note that apple has made a patch about a year ago that makes it so you can only get airdropped by “contacts” (or turn it off), the “everyone” mode has been limited to 10 minutes at a time before switching back

Base +10, e hentai user 8922 +6, your_name +6, TheBrojangles +6, alphabetagama +8, MACZ2021 +6, IcyHot32 +9

…… Worth it.

Base +6