Most phones with two SIM slot is dedicated to developing countries, where they
change operators depending on time of day to get the best price, and are not
necessarily the highest quality.
At the Mobile World Congress, Viewsonic has
introduced a device designed for other users of these telephones, professionals
who do not want the hassle of a personal device. The ViewPhone 4s is a dual SIM
smartphone that has nothing to envy to the iPhone.
The comparison with the iPhone is also obvious: unlike most of Android smartphones that emphasize formats beyond 4 ", the ViewPhone 4s is" satisfied "with a 3.5" screen.
The comparison with the iPhone is also obvious: unlike most of Android smartphones that emphasize formats beyond 4 ", the ViewPhone 4s is" satisfied "with a 3.5" screen.
