For example, let's look at the option flagship mobile phone Samsung F300, which is playing music. The phone has two faces, on the one hand, it is a typical mobile phone, on the other, the more the multimedia side of the device is a multimedia player. The solution seems to be really brilliant .. but its implementation has, unfortunately not. The player features a background, which was to serve the users to listen to music while using the phone. Yes indeed, but only when using the multimedia functions, where the forest is a second piece of apparatus becomes inactive-function background, therefore, enables us to listen to music virtually while browsing the list of files on your phone. Not very innovative. The second issue, which was to lay members to their knees in front of a ultramusic "Samsung F300 mobile phone (identification of the manufacturer) is a function of saving energy at which we can continue to use the player. -Function is actually very useful, you can even listen to music during the plane flight, for example. It appears, however, that many members of unknown reasons can not use it in, and then of course there is no radio, so if we do not have any songs in mind, our ultramusic significantly decreases. Another disadvantage is the quiet work. Player, although the manufacturer is that it is "one, while a separate device, in fact, is closely associated with his camera phone. That's why if you switch the phone on silent mode, the player will be constantly asked whether the song play in this mode. Conversely, if it comes to self-file playback quality is good and certainly good for most users, even when the songs are let go by the speaker. However, the most important problem that you are fighting a mobile phone Samsung F300, is to change the operating mode and no skill placed buttons. If listen currently a track and accidentally press the button changes the operating mode to the phone, the camera, which also likes to tease stupid questions, this time without any information we would like to switch us immediately in the selected mode, of course, excluding the track.