It does not exist as an official title. You will be playing a fan-made patch of a 2011 game.
The for Android is not an official release by 2K Games. Instead, it is typically a fan-made mod of WWE SmackDown vs. Raw 2011 Wwe 2K15 Psp Iso Download For Android
If you're interested in playing WWE 2K15, consider checking if it's available on newer consoles or through backwards compatibility on PlayStation 4 or Xbox One, where you can purchase and download it legally. It does not exist as an official title
There are three primary reasons: