Mobile phone manages photos, has complete music functions, and can also edit your favorite ringtones.
Clean up the garbage and repair the flashback function.
Like jailbreaking, computer users can also use the functions of one-click jailbreaking and computer brushing.
In addition, Apple's official itunes, but the functions are uneven, and many commonly used functions are not available, such as exporting photos and importing ringtones and music. The benefits are official, so many people use them.