It turns out that after downloading the phone (G1), the background starts the command shell with root rights, and each character typed on the keyboard also goes there, regardless of which active application it was typed in. Issue 1207, jdhorvat writes : ... During a chat with her friend, she asked why I did not answer for a long time.I just rebooted my phone and the first to dial in response was only one word: “Reboot”, after which the phone rebooted again.