EMERGEN.C / CELLPHONE CASE

What could happen if there is a cell phone equipped with some special devices useful for emergencies.
The compound word "Emergen.C" is formed from the words "emergency" and "case", and this is the cell phone case could help people in the situations of emergencies.
Emergen.C, composed of module, have gas mask, emergency battery and DMB receiver.
People could be safely evacuated by the mask from fire at the subway or caused by the earthquake.
And if we have emergency battery, the probability to be rescued from isolation at mountains or island could be much higher than do not