Is the S24 Ultra worth it over the S23 Ultra?

The main gains are the flat display, titanium frame, 5x telephoto replacing the 10x, and a longer update commitment. If you already own an S23 Ultra, the camera and design changes are incremental.

Does it work on all US carriers?

This is a factory unlocked SM-S928U model, so it works on major US carriers. Check that your carrier supports the bands and that the phone is not carrier-locked before buying.

How good is the zoom camera?

It has a 5x optical telephoto and a 3x telephoto alongside the 200MP main sensor. Shots hold up well to about 10x, and beyond that quality depends on light.

Samsung ships the phone with a USB-C cable and SIM tool; there is no charger or case in the box.

How long will it get updates?

Samsung promises seven years of OS and security updates for the S24 series, so it should stay supported well into the 2030s.

Is 256GB enough storage?

It is fine for most users, but heavy 8K video or large game libraries will fill it. There is no microSD slot, so pick a larger capacity if you shoot a lot of video.