Hi there at ringtones service Audiko.net, where you can easily search for epic ringtones for your smart phone. Today we have a ringtone of “What U Doin” by Big Sean as well as 2603 other ringtones by Big Sean. You can listen to all 4 Big Sean – “What U Doin” ringtone variations available here and download it for free directly to your smart phone. You can also get other 3 albums produced by Big Sean for all time. “What U Doin” is referred to Rap, and Audiko offer a huge amount of Rap tracks absolutely for free. And finally, we have collected lyrics for this track and you can view it here as well. So feel free to browse, listen, download ringtones at Audiko.net. Make your phone sound cool!