I'm not into it but I keep seeing claims they store the wallet's secrets within the secure element of the device, but they are mixed so I really don't know.

 I always had the assumption they couldn't since they'd need to directly co-operate with an OEM to design functionality to store seed phrases or cryptocurrency keys. So I'd need to see something that showed otherwise.

Would like to see one for myself for the sake of forensic analysis but I am not wasting money to get one especially when I won't ever use SOL.

final

bitcoin

What should a phone for bitcoiners have?

A non-Android based phone would be great, but not really realistic in the short term. Quickest root to having a working phone(capable app ecosystem etc) is obviously using Android. So something similar to what Solana mobile are doing https://solanamobile.com/ . See how that does and learn and improve on it.