In the summer of 2022, cybersecurity expert David Schutz was returning home after a long day on the road. His Google Pixel 6 smartphone was running out of juice: by the time David finally got home, it was down to 1%. And as luck would have it, the phone turned off in the middle of messaging. Schutz found his charger and turned the phone back on, but couldn’t carry on texting — he had to enter the SIM PIN code. Worn out after the trip, David entered the wrong PIN three times. This meant entering another secret code — the PUK. Having done that, David was invited to unlock the phone with a fingerprint. But after the fingerprint was recognized, it froze.
After restarting your phone, fingerprint unlocking is not usually an option. An unlock code is required. Source.
Anyone else would probably have put these strange happenings down to software glitches, restarted the phone again, and got on with their life. But David, a researcher with a good nose for weird-behaving software and devices, decided to get to the bottom of why his phone no longer wanted an unlock code after restarting. After several unsuccessful attempts, David realized that a restart in this case is unnecessary. Take a locked smartphone, remove the SIM card, reinsert it, enter a wrong PIN code three times, enter the PUK code… What happens? Turns out you can completely bypass the phone’s lock screen! Schutz detailed the discovery on his blog, but if you assume that Google quickly fi ..
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