Recommend any software to recover data from an iPhone 5 which is over a year old?

I have a mobile phone which hasn't been used in over a year as it was reset when a new phone was purchased and just left in the drawer as a spare.

I desperately need to recover data from it as there was a phone number stored on it which I need to inform somebody of a death.

Any links or suggestions would be greatly appreciated. I haven't been able to find anything that can recover things from over a year ago.

If it was reset and there was no backup made, you're out of luck.