"In the 9 months I’ve been in Antarctica, my trusty cell phone has taken some truly remarkable photos under challenging conditions. Nearly every photo I’ve taken for this blog has been a cell phone photo. " [1]

His "old phone" he keeps in a drawer for internet usage is an Android but I can't see any attribution to his current phone model. [2]

[1] - https://brr.fyi/posts/polar-night [2] - https://brr.fyi/posts/sms-mfa#phone-in-a-drawer

I've run exiftool over some of his photos, and some of them include make and model, and these were the Samsung S22. I haven't gone through all the images, so maybe some other phone models could be found in there.

And some of the images contained "Profile Copyright: Apple Computer Inc." but I don't know if this means that some were shot on an iPhone.

Fun fact: the webcam on the observation hill (https://brr.fyi/posts/observation-hill) is an AXIS Q6055-E.