[markild]

Absolutely every cell phone has the ability to call emergency numbers from a locked device. Even without Sim card.

[vonunov]

(also note it will use any available cell tower operated by any provider and will preempt normal calls if the station is too busy, so the appearance of no signal/"bars" shouldn't discourage trying to call 911)

[Faaak]

> Even without Sim card.

Depends on the countries though. A sim card (whether expired or not) is needed in France to call 112

[crote]

To be pedantic: the cell phone is required to have this capability - the network just doesn't have to accept it.