As for the rest of the traditional “phone stuff” like speed, battery life, and so on, the Z Flip really is refreshingly normal. Performance is great, thanks to a Snapdragon 855 Plus processor and 8GB of RAM. It’s not top-tier for Android, but it’s last year’s flagship specs, and that’s plenty.
The 256GB of storage isn’t expandable, and there’s no headphone jack, but that’s pretty normal for phones today, too.Software-wise, the Z Flip runs Samsung’s One UI customizations on top of Android 10. Samsung is emphasizing One UI’s split-screen abilities by placing a slide-over widget that makes it easier to open a second app. That’s nice, but I prefer the more traditional edge screen function that’s available on other Galaxy phones.
Bemnet's Weekly Tech Blog 