Get the most out of your Galaxy S21 Ultra with these 10 apps and features The Galaxy S21 Ultra is the best smartphone I've ever used. Taking all of the good points from last year's S20 Ultra and fixing many of the complaints, this device is an absolute powerhouse. To paraphrase Uncle Ben, with great hardware comes great flexibility, and as such, there are plenty of apps and resources you can use to make the most of your shiny new phone, and here are 10 of our favorites. Infinite Painter The S Pen has long been the gold standard to which active styluses are held, and using it with the S range is great. The last S Pen I used was the old Note 10.1 tablet, and Samsung has made a lot of improvements since 2012. Despite lacking Bluetooth, this is the nicest stylus I've used, including the Apple Pencil I have with my iPad.