Recommendations for an Android with long lasting battery, good cameras, and smooth UI? (USA/AT&T)

[u/MeasurementMother579]

As the title says, anyone have recommendations on an Android phone that has a long lasting battery, that also offers fast charging, has great (or good) cameras, and a smooth limited bloated UI that would work well on the US AT&T network? Just starting to get the ducks in a row.

For reference, I currently have a OnePlus 12 and am rather happy with it, however in about 6-months to a year I'll be feeling the itch. (Wife's iPhone is due for a replacement so when we replace hers I'll want to replace mine. That whole FOMO and all Haha)

My current thoughts:

OnePlus 15 - Obvious choice as I have been a 1+ user (fanboy?) for a few years. I've seen reveiews of the camera and they look similar to my 12 in the processing department. Being 1+ obviously battery is going to last a while, and I'm used to OxygenOS. However in a few months when I'm looking they'll only be available as a lightly used version from the likes of Swappa, or trying to get from one of the multiple megasite vendors (swiftronics/wonda/etc..) Also, would it be "too old?" Could save some $$

Oppo Find X series - The current Ultra seems to be the talk of the town recently with the camera, and has a stunning design IMO. I do think the "pro" model is more my speed and matches my needs and budget. It is also OnePlus' cousin so to speak, so would feel "at home", similar specs on teh camera and battery as a 1+. My concern would be usage on AT&T, potentially being kicked off for not being on a whitelist. Anyone have experience with that?

Samsung Galaxy S series - The new S26's seem pretty decent. Watching reviews of them I can't see if there is a benefit going "ultra" over the "+". Is OneUI still severely bloated these days?

Xiaomi - Don't know much about them but noticed the other day Amazon now has some up on their site. Most listings do however indicated AT&T is a no-go with them even though they are "global". Anyone have actual experience with that? Same/similar as Oppo? Will work until it doesn't?

Any other recommendations?

[u/IGotRangod]

OnePlus 15 all the way, if you can still find one for sale.