ÃÛÑ¿´«Ã½ OS - Why can't police unlock the San Bernardino attacker's phone? - ÃÛÑ¿´«Ã½ Sounds

ÃÛÑ¿´«Ã½ OS - Why can't police unlock the San Bernardino attacker's phone? - ÃÛÑ¿´«Ã½ Sounds
Why can't police unlock the San Bernardino attacker's phone?
Phone makers are using a level of encryption used by governments.