Backup in case smartphone runs out of battery

[B. Douille]

Hello,

From time to time it happens the smartphone shutdown due to running out of battery  
I believe that when the next time the App is started the samples previously stored in memory or in the cache are juste wiped off.
Would it be possible to keep this precious data, asking the user if he wants to save it or clean it?

I see such workflow in some Apps like editors or GPS position trackers.

Thanks in advance