Such pre-reset capture storage devices store pre-reset information in response to the reset and maintain the stored pre-reset information until another reset occurs.

In response to resetting this microcontroller (30), a counter is started and the test interface (34) is initially set to a disabled state while an initiation program is executed.

The answer to Does resetting iPhone delete everything changes if your iPhone is jailbreaked or if you have already backed up all the important data.