At 5.8mm thick the Samsung Galaxy S25 Edge is 1.4mm thinner than the standard Samsung Galaxy S25 and 1.5mm thinner than the Samsung Galaxy S25 Plus. Relative to the overall thickness that’s quite a reduction, but is 1.4mm really noticeable?

A slimmer phone means scaling back on some components, including the battery. The Galaxy S25 Edge has a 3,900 mAh battery, compared to 4,000 mAh on the baseline S25 and 4,900 mAh on the S25 Plus. Samsung says the S25 Edge's battery should last you all day, and in my experience so far, this has been true -- but don't expect any more than that.