For her Lock Screen she has a picture of Nickit doing something cute, or her entire team (like a photoshoot) or maybe Victini eating a macaron or something adorable :3c

Her Home Screen is a little more personal, and it's probably a photo of herself with Rose and Oleana, I'm not sure if they have many photos all together but maybe they took one after one of Briar's first concerts, after sending her flowers backstage like people usually do for idols lol But she's too embarrassed to admit she has feelings so she would say her Home Screen is a picture of herself because she's a narcissist or something

Tina has a picture of her parents on her lock screen, her home screen has a slideshow of amusing pictures of her friends and her pokemon.

Nera has a picture of herself in her lockscreen, and a family picture on her home screen.

Cedar has a picture of Clio, his girlfriend, on both.

Jin's pretty basic, she'd have pics of her and Mary together. And once the kiddies come along, they get those spots.

Jasmine: lock screen: The entrance to the mirage forest. Home screen: a photo of her and her family when she was younger.

Andres: Lock screen: a photo of his Ralts drinking coffee. Home screen: a photo of his high school gang

Kingston: default lock screen and homescreen...
ruth: doesnt have a phone
Mira: Lock screen is a motivational quote that changes daily and her homescreen is a pic of her and mali as children qwq

Already answered :P (https://retrospring.net/@Izetarion/a/108472526362720801)