The Galaxy S25 Ultra is one of the best Android flagship phones money can buy, but is it enough of an upgrade over the S23 Ultra?

A YouTuber placed the Galaxy S25 Ultra in two major battery tests to check its supposed longevity and charging improvements. One charging test marked swifter charging speeds over the S24 Ultra while a battery drain test displays Samsung's work at extending its life cycle.

The Samsung Galaxy S25 Ultra is now official – and very likely the best Android phone you'll get your hands on this year. Prior to its reveal at Samsung's first Galaxy Unpacked event of 2025, I was able to test out the phone at a pre-briefing session for this early first impressions review – with my full verdict to follow next week,