Business Insider reported on hacking an Android phone by typing in a really long password.
The vulnerability, discovered by John Gordon, is easy to exploit: simply open the phone’s “Emergency Call” feature, type a few characters and the repeatedly copy-and-paste them. The pasted text becomes longer and longer — Gordon’s reaches over 160,000 characters — and, as such, harder for the phone to handle.
Next, open the camera app which causes the phone to ask for a password into which the 160,000 character string is pasted. After a few minutes the phone restarts, booting straight to the unlocked home screen.