I am not sure I understand your conclusions. Are you suggesting that when they put the battery back in place, the clock started up as if picking up where it last left off (the time in the photo is now 7:02, so you assume it had died a few minutes earlier)? I wouldn't think something like the time would have stayed in place for 7 months (ie, not stored on a removable memory device, but was in the phones transient memory). I am no expert so have no idea, just trying to understand where you were going with this.