I am using my corporate iPhone, but I have never purchased songs from iTunes. I’ve a huge collection of songs as mp3, and I prefer to copy my actual favorites to my smartphone, which is also connected by Bluetooth to my car. Also I do a lot of radio recordings, which are usually not available at iTunes.
So when I was changing from the liberate Android to IOS, I needed to find a solution. I found a little App with a soso interface, but it’s working. It’s name is AirDisk Pro.
You can copy all mp3 easily by wifi to your iPhone and then listen to it in a tiny yellow player. It’s not beautiful but it works.
The app is not for free, but for me it’s ok. I am using it now since two years.
Drag & Drop mp3 to an IPhone
Ok, the player doesn’t look cool