How do I use the keyboard on my phone?

The Roar Shift on Instagram: "Handwriting unlock on Samsung devices is a feature for inputting text within specific apps or as a keyboard option, but it is not a method for unlocking the device's main lock screen itself. The image depicts a user drawing characters on a Samsung phone, likely interacting with the handwriting input feature available in the Samsung Keyboard or the Samsung Notes app using an S Pen stylus. While you can use handwriting to enter text within apps, the primary methods fo