"Sonic Mania" was released on various platforms, including PC, PlayStation 4, Xbox One, and Nintendo Switch. While there were mobile versions of other Sonic games, "Sonic Mania" was not originally released for mobile devices.
However, it is worth noting that game releases and availability can change over time, and new versions or ports may be developed for different platforms, including mobile devices, after the initial release. If there is a mobile version of "Sonic Mania" now, it may have been released or announced .
To get the most up-to-date and accurate information, I recommend checking official sources, such as game developers' websites or reputable app stores, to see if "Sonic Mania" is available on mobile devices.