Greetings, I found out, that there is no possibility to use special keys like "CTRL", "ALT", "F1" - "F12", "ARROW_LEFT", ... in the Android app of KDEConnect. I think this should be added to the Android App, because it is very limiting without those "Desktop keys". Kind regards, Sefa Eyeoglu
You can install keyboards on Android that do have special keys like Ctrl, or the F-keys and use them with KDE Connect. A good keyboard for that is Hacker's Keyboard (which is also free software): https://play.google.com/store/apps/details?id=org.pocketworkstation.pckeyboard&hl=en Apart from that, we don't have plans to add these keys to KDE Connect itself as of now.