I have installed yesterday 3cx phone on my brand new ZTE Blade device. I have tested several sip clients among the most appreciated on the market but 3cx is simply superb for graphic, integration, settings and so on, so I'm very satisfied. Apart from that, there's a very annoying issue bothering me: the speakerphone/earphone command on the main screen doesn't work and all calls are routed through the back speakerphone, obviously with high volume. This creates privacy problems and, most of all, larsen or deep and self feeding echo effect so I have been forced to use the headset given with the device. So far so good but I wonder if here anyone has the same problem and how it has been solved. Thanks for reading. Francesco, Italy.