I use the phone for about a year. The choice of SIM card is very simple and is done via the upper right knob on the housing. A restart when you select the respective card, as described in numerous reviews, not necessary. Before each SMS or a call you have the option of SIM 1 or SIM 2 to define as the sender. Sounds complicated, but it's not. The processing can be described as solid, the keyboard also offers larger fingers enough space to hit the right keys. Only the housing at the back and the display is in my opinion a bit scratched. The camera is useful for daylight shots. Radio, Music Player and Bluetooth also work fine. The only negative point is the rather modest battery life. With a below-average use of every second, at least every third day is necessary to charge. As useful accessories, I recommend an additional car charger or USB data and charging cable to have several options for charging and not constantly lugging the power supply. Due to the overwhelmingly positive properties and the excellent value for money smooth 5 Stars!