I went into the Samsung Galaxy S25 Edge totally skeptical. Super-thin phones usually feel like a gimmick, so I used the Edge for a full week and compared it head-to-head with the S25 Ultra to see what actually matters day to day. Out of the box, the Edge is insanely light (163g) with a big 6.7-inch AMOLED display, and yeah—people notice it for five minutes… then the hype fades. The sharp edges are wild without a case, and once you slap a case on an $1,100 phone, it basically feels like any other slab. That’s when I started side-eyeing the real trade-offs. The biggest shocker is battery: the Edge’s 3900mAh setup gave me roughly 2.5 to 4 hours of screen time, and I was hunting for a charger by 2 p.m. Meanwhile the Ultra’s 5000mAh was a stress-free 7 to 8 hours, plus faster 45W charging (Edge is 25W). Cameras are another gap—Ultra is a Swiss Army knife with real zoom lenses, while the Edge is basically main + ultrawide, and zoom past 2x gets messy. Performance is fast on both with Snapdragon 8 Elite Gen 3, but the Edge heats up hard in gaming. My verdict: for most people, the S25 Ultra (or even the S25 Plus) makes way more sense—unless you’re obsessed with thin-and-light and don’t mind charging a lot.