Typing in Greek
The Greek keyboard supports word prediction and the flick feature, which allows you to flick word suggestions up onto the screen (if you have this feature turned on). The Greek keyboard also allows you to type alternate characters two different ways. You can press , and then press a letter, or you can press and hold the primary character and then select the alternate character from the options.
If your device has a physical keyboard, the following image shows how the Greek characters map to the physical keys: