We should also note that if you're excited for the year of thin phones, you'll have to wait for the rumored iPhone 17 Air to get an ultra-slim Apple smartphone. Samsung Galaxy S25

In order for Samsung to achieve its engineering marvel with the Galaxy S25 Edge, the company had to cram a much smaller battery into its svelte frame. This turns out to be a 3,900 mAh battery cell, which is actually a smidge smaller than the 4,000 mAh battery in the regular Galaxy S25.