Here’s a rather interesting cell phone + Bluetooth headset concept design – the Aliph Solo Bluetooth Headset. When not in use, it’s kept comfortably inside the cell phone, when the call comes in, just press it down and it’ll extend upwards, allowing you to use the cell phone in a comfortable position. If you suddenly find that you need both your hands, you can always remove the headset from the cell phone, having it function like a sleek Bluetooth headset. Thanks to the design, charging is also made easier as you’ll be able to charge both devices at the same time using just one charger. Pretty cool.