(Especially if you have a Samsung or HTC device.) + If you are having trouble entering text, try installing the free 'Hacker's Keyboard IME'. No ads, no in-app-purchases, no nag screens, nothing. (Arabic, Chinese, Greek, Hebrew, Japanese, Korean, Russian, Thai, etc.) Same great program, just with a new name. This is a new version of the popular 'Android Terminal Emulator' application. Access your Android's built-in Linux command line shell.