Have I bought these speakers due to the many positive review. Although I do not have i PHONE. If you are in possession of a new Sony smartphone or Sony Tablet Z 2, not need one with the supplied wireless transmitter. This has been evaluated by iPhone users as cumbersome and obstructive. Since this first must always be connected. The new generation has the Sony Bluetooths apt X code is important to good sound playback (to check whether tablet or smartphone in Bluetooth sends this format, read the data sheet of the device after). Well the charging function is thus not for the Sony devices available, I do not need this really. A nice touch is that you can use these speakers as support under the TV sound when connecting it with a jack-jack cable to the TV. The nice thing is that you have nothing more active when watching TV, Bluetooth remains active. The sound is great !!! Ok, of course, not comparable with a hi-fi system. but for the price simply super. Can only recommend Price just for that (63.00) this speaker.